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Block Truncation Coding (BTC) is a type of lossy image compression technique for greyscale images. It divides the original images into blocks and then
Block_Truncation_Coding
Lossy color image compression algorithm
Adaptive Scalable Texture Compression. It is closely related to Block Truncation Coding, another lossy image compression algorithm, which predates Color
Color_Cell_Compression
Type of data compression
network, that is optimized for each material, to decompress them. Block Truncation Coding (BTC) Vector quantization Color Cell Compression Andrew Beers;
Texture_compression
Lossy video codec developed by Apple Inc.; also known as QuickTime Video
Color quantization Block truncation coding, a similar coding technique for grayscale content Color Cell Compression, a similar coding technique for color
Apple_Video
Texture compression algorithm
published Color Cell Compression, which is in turn an adaptation of Block Truncation Coding published in the late 1970s. Unlike some image compression algorithms
S3_Texture_Compression
Video codec by Apple Inc
Color quantization Block truncation coding, a similar coding technique for grayscale content Color Cell Compression, a similar coding technique for color
QuickTime_Graphics
Topics referred to by the same term
instruction set Bitcoin (currency symbol: BTC), a cryptocurrency Block Truncation Coding, a lossy image compression technique Budapesti TC, Hungarian football
BTC
Video codec by Microsoft
Color quantization Block truncation coding, a similar coding technique for grayscale content Color Cell Compression, a similar coding technique for color
Microsoft_Video_1
Compact encoding of digital data
code-excited linear prediction Block Truncation Coding Code-excited linear prediction Color Cell Compression Delta modulation Differential pulse-code
Data_compression
Mission including first robotic rover to operate on Mars (1997)
(26 in). Images from these cameras could be compressed using the block truncation coding (BTC) algorithm. The third camera, situated at the rear near the
Mars_Pathfinder
Textured ground surface indicators to assist blind people
Tactile paving (also called tenji blocks, truncated domes, detectable warnings, tactile tiles, tactile ground surface indicators, tactile walking surface
Tactile_paving
companding algorithm Warped Linear Predictive Coding (WLPC) Image compression Block Truncation Coding (BTC): a type of lossy image compression technique
List_of_algorithms
First NASA Mars rover on Mars Pathfinder mission
Company; they were clocked out by CPU, and capable of auto-exposure, Block Truncation Coding (BTC) data compression, bad pixel/column handling, and image data
Sojourner_(rover)
Cryptography algorithm
In cryptography, a block cipher mode of operation is an algorithm that uses a block cipher to provide information security such as confidentiality or authenticity
Block cipher mode of operation
Block_cipher_mode_of_operation
Video compression format, succeeds H.264/MPEG-4 AVC
volume Time code, for archival purposes Additional coding tool options have been added in the March 2016 draft of the screen content coding (SCC) extensions:
High_Efficiency_Video_Coding
Block cipher
a single block where n > 1 v is the n word data vector k is the 4 word key n is negative for decoding if n is zero result is 1 and no coding or decoding
XXTEA
International standard
blocks of data Output transformation of the result of the last iteration Truncation of the result to the required length For most steps, the standard provides
ISO/IEC_9797-1
Form of entropy encoding used in data compression
Arithmetic coding (AC) is a form of entropy coding used in lossless data compression. Normally, a string of characters is represented using a fixed number
Arithmetic_coding
Lossless data compression method
this set of codes in an adaptive coding scheme; "Rice coding" can refer either to that adaptive scheme or to using that subset of Golomb codes. Whereas a
Golomb_coding
Transform in numerical harmonic analysis
characteristics and design considerations for temporal subband video coding". ITU-T. Video Coding Experts Group. Retrieved 13 September 2019. Bovik, Alan C. (2009)
Discrete_wavelet_transform
Image compression standard and coding system
Embedded Block Coding with Optimal Truncation. In this encoding process, each bit plane of the code block gets encoded in three so-called coding passes
JPEG_2000
Block cipher
Twofish block cipher is a truncated differential cryptanalysis of the full 16-round version. The paper claims that the probability of truncated differentials
Twofish
Type of cipher
In cryptography, a block cipher is a deterministic algorithm that operates on fixed-length groups of bits, called blocks. Block ciphers are the elementary
Block_cipher
Reliable digital data delivery methods on unreliable channels
In information theory and coding theory with applications in computer science and telecommunications, error detection and correction (EDAC) or error control
Error detection and correction
Error_detection_and_correction
Block cipher
In cryptography, XTEA (eXtended TEA) is a block cipher designed to correct weaknesses in TEA. The cipher's designers were David Wheeler and Roger Needham
XTEA
Set of codewords, none a prefix of another
a fixed-length code, or a block code (though the term block code is also used for fixed-size error-correcting codes in channel coding). For example, ISO
Prefix_code
Computer communications authentication algorithm
SHA-1) blockSize: Integer // The block size of the hash function (e.g. 64 bytes for SHA-1) // Compute the block sized key block_sized_key = computeBlockSizedKey(key
HMAC
Class of error correction codes
distributions are easy to derive. RA codes were introduced by Divsalar et al. In an RA code, an information block of length N {\displaystyle {N}} is repeated
Repeat-accumulate_code
Form of cryptanalaysis
In cryptography, truncated differential cryptanalysis is a generalization of differential cryptanalysis, an attack against block ciphers. Lars Knudsen
Truncated differential cryptanalysis
Truncated_differential_cryptanalysis
Earliest civilian block ciphers
The name "Lucifer" was apparently a pun on "Demon". This was in turn a truncation of "Demonstration", the name for a privacy system Feistel was working
Lucifer_(cipher)
Topics referred to by the same term
mode (CTR mode), a cryptographic mode of operation for block ciphers X-ray crystal truncation rod, a technique to measure properties of crystal surfaces
CTR
Non-protein coding transcripts longer than 200 nucleotides
coding and non-coding transcripts in the sense and antisense directions For example, 3012 out of 8961 cDNAs previously annotated as truncated coding sequences
Long_non-coding_RNA
Message authentication code algorithm
a code produced by the DAA is called a Data Authentication Code (DAC). The algorithm chain encrypts the data, with the last cipher block truncated and
Data_Authentication_Algorithm
Password-based key derivation function
block using current key schedule block ← Encrypt(P, S, block) P2n ← block[0..31] //lower 32-bits of block P2n+1 ← block[32..63] //upper 32-bits block
Bcrypt
Block cipher
In cryptography, Q is a block cipher invented by Leslie McBride. It was submitted to the NESSIE project, but was not selected. The algorithm uses a key
Q_(cipher)
Simulation system language
new algorithm and new block types. It was officially released as a supported IBM-label program on September 27, 1961 with 25 block types. At this point
GPSS
Alphanumeric encoding of geographic coordinates
thereafter are coded in a single code digit as follows: Areas larger than an 8-digit block can be specified by truncating the code after the relevant digit pairs
Open_Location_Code
Non-proportional electoral system
Plurality block, also called as multiple non-transferable vote, and block plurality voting, is a type of block voting method for multi-winner elections
Plurality_block_voting
Block cipher
Triple DEA), is a symmetric-key block cipher, which applies the DES cipher algorithm three times to each data block. The 56-bit key of the Data Encryption
Triple_DES
Decodes a bitstream with the Viterbi algorithm
thumb of a truncation depth of five times the memory (constraint length K-1) of a convolutional code is accurate only for rate 1/2 codes. For an arbitrary
Viterbi_decoder
Variable capable of taking on a limited number of possible values
would be gained from coding the total g groups: for example, when coding gender (where g = 2: male and female), if we only code females everyone left
Categorical_variable
Authenticated encryption mode for block ciphers
(counter with cipher block chaining message authentication code; counter with CBC-MAC) is a mode of operation for cryptographic block ciphers. It is an authenticated
CCM_mode
Block cipher
(also known as ARC2) is a symmetric-key block cipher designed by Ron Rivest in 1987. "RC" stands for "Ron's Code" (see also RC2, RC5 and RC6), but generally
RC2
Implementations of Advanced Encryption Standard
mode encrypts and decrypts each 128-bit block separately. In this mode, called electronic code book (ECB), blocks that are identical will be encrypted identically;
AES_implementations
Open-source parallel file system
some code refactored to adhere to coding standards. trove truncate bstream before set size attr in case former fails. lock local lock for truncate as well
OrangeFS
Cryptographic algorithm
the final two ciphertext blocks, so the ciphertext ends with the full final block, followed by the truncated penultimate block. This results in naturally
Ciphertext_stealing
Authenticated encryption mode
Authentication Code (GMAC) is an authentication-only variant that can form an incremental message authentication code. GCM uses a 128-bit block cipher (commonly
Galois/Counter_Mode
respondent was Bill Gates. Top-coding may be also applied to prevent possibly-erroneous outliers from being published. Bottom-coding is analogous, e.g. if amounts
Top-coded
Set of cryptographic hash functions
hash variants of the same short message would be the same up to truncation. The block transformation f, which is Keccak-f[1600] for SHA-3, is a permutation
SHA-3
Aspect of the instruction set architecture of CPUs
results, even though that's not exactly what happens internally. Each "basic block" of such sequential instructions exhibits both temporal and spatial locality
Addressing_mode
Standard for the encryption of electronic data
Standards and Technology (NIST) in 2001. AES is a variant of the Rijndael block cipher developed by two Belgian cryptographers, Joan Daemen and Vincent
Advanced_Encryption_Standard
Input method
characters (up to four hexadecimal digits), with excess digits being truncated. This did not work in all applications or user interface elements. Windows
Alt_code
Algorithm
symmetric-key encryption. Symmetric-key encryption can use either stream ciphers or block ciphers. Stream ciphers encrypt the digits (typically bytes), or letters
Symmetric-key_algorithm
Computer storage device with no moving parts
block mapping Read and write caching Encryption Crypto-shredding Error detection and correction using error-correcting code (ECC), such as BCH code Garbage
Solid-state_drive
Block cipher
Encryption Algorithm (TEA) is a block cipher notable for its simplicity of description and implementation, typically a few lines of code. It was designed by David
Tiny_Encryption_Algorithm
Block cipher
for 'Grasshopper'; Cyrillic script: Кузнечик) is a symmetric block cipher. It has a block size of 128 bits and key length of 256 bits. It is defined in
Kuznyechik
Block cipher
Anubis is a block cipher designed by Vincent Rijmen and Paulo S. L. M. Barreto as an entrant in the NESSIE project, a former research program initiated
Anubis_(cipher)
Computer programming identifier naming convention
Spolsky, Joel (2005-05-11). "Making Wrong Code Look Wrong". Joel on Software. Retrieved 2005-12-13. "Mozilla Coding Style". Developer.mozilla.org. Archived
Hungarian_notation
Authenticated encryption mode with resistance against nonce reuse
v t e Block ciphers (security summary) Common algorithms AES Blowfish DES (internal mechanics, Triple DES) Serpent SM4 Twofish Less common algorithms
AES-GCM-SIV
File format for block-based Gzip compression
Blocked GNU Zip Format (BGZF) is a variant of gzip file format that uses block compression, a method that compresses data in independent blocks of content—each
BGZF
Attacks against common ciphers
This article summarizes publicly known attacks against block ciphers and stream ciphers. Note that there are perhaps attacks that are not publicly known
Cipher_security_summary
Internet routing system
RFC 4893. Updates RFC 4271. "Using AS 23456: How BGP Uses Conversion or Truncation For Compatibility". 2008-07-21. Archived from the original on 2016-10-29
Autonomous_system_(Internet)
Block cypher operating mode
The xor–encrypt–xor (XEX) is a (tweakable) mode of operation of a block cipher. In tweaked-codebook mode with ciphertext stealing (XTS mode), it is one
Xor–encrypt–xor
Block cipher
In cryptography, MAGENTA is a symmetric key block cipher developed by Michael Jacobson Jr. and Klaus Huber for Deutsche Telekom. The name MAGENTA is an
MAGENTA
Length of bit string processed by a cipher
stream ciphers and block ciphers. Block ciphers operate on a fixed length string of bits. The length of this bit string is the block size. Both the input
Block_size_(cryptography)
Input to a cryptographic primitive
relationships between (potentially similar) segments of the encrypted message. For block ciphers, the use of an IV is described by the modes of operation. Some cryptographic
Initialization_vector
Soviet/Russian national standard block cipher
GOST block cipher (Magma), defined in the standard GOST 28147-89, is a Soviet and Russian government standard symmetric key block cipher with a block size
GOST_(block_cipher)
2023 screenshot vulnerability
references the last, and dynamic Huffman coding, where a Huffman tree is defined at the start of the block. The Huffman tree in Markup screenshots are
ACropalypse
Block cipher
to Ron Rivest, the RC stands for Ron's Code, but the RC documentation says simply RC6. RC6 proper has a block size of 128 bits and supports key sizes
RC6
truncation, the resulting primitive is more aptly described as a Message Authentication Code rather than an encryption function. Although a truncated
Digital_signature_transponder
Block cipher
In cryptography, BaseKing is a block cipher designed in 1994 by Joan Daemen. It is very closely related to 3-Way, as the two are variants of the same
BaseKing
Wide-block cipher
for disk encryption. It uses a new cipher construction called HBSH (hash, block cipher, stream cipher, hash), specifically choosing NH, 256-bit Advanced
Adiantum_(cipher)
Cipher
In cryptography, the S-1 block cipher was a block cipher posted in source code form on Usenet on 11 August 1995. Although incorrect security markings
S-1_block_cipher
Cryptographic hash function
then truncated to the desired width. This is equivalent to applying a final iteration of the compression function using an all-zero message block m, followed
Grøstl
Character-recognition technology
Electronic Device) which used figures that looked more conventional. Cheque truncation system Electronic Recording Machine, Accounting OCR-A OCR-B Amelia (typeface)
Magnetic ink character recognition
Magnetic_ink_character_recognition
Signal conversion technique
compander achieved a very mild gain error recovery due to the natural truncation rounding error caused by twelve bit arithmetic. The complete function
Delta_modulation
Block cipher
and Jaguar. KeeLoq "code hopping" encoders encrypt a 0-filled 32-bit block with KeeLoq cipher to produce a 32-bit "hopping code". A 32-bit initialization
KeeLoq
Family of authenticated ciphers
ciphers are parameterizable by the key length k (up to 128 bits), "rate" (block size) r, and two numbers of rounds a, b. All algorithms support authenticated
Ascon_(cipher)
Signals broadcast by GPS satellites
with published frequencies and chip rates, but the signals use encrypted coding, restricting use to authorized parties. Some limited use of restricted signals
GPS_signals
Block cipher
In cryptography, MacGuffin is a block cipher created in 1994 by Bruce Schneier and Matt Blaze at a Fast Software Encryption workshop. It was intended
MacGuffin_(cipher)
Electoral district with one representative in a legislature
mandated by law pursuant to the Uniform Congressional District Act (2 U.S. Code §2c), under the justification that they served as bulwarks against southern
Single-member_district
Block cipher
In cryptography, LOKI97 is a block cipher which was a candidate in the Advanced Encryption Standard competition. It is a member of the LOKI family of
LOKI97
Adding data to a message prior to encryption to hide its length
technology – Security techniques – Message Authentication Codes (MACs) – Part 1: Mechanisms using a block cipher Wright, Charles V.; Ballard, Lucas; Coull, Scott
Padding_(cryptography)
Cryptographic attack
large delay as the CPU tries to backtrack. This requires writing branch-free code. Some "complicated" mathematical operations, depending on the actual CPU
Timing_attack
Family of block ciphers
Speck is part of a family of lightweight block ciphers publicly released by the National Security Agency (NSA) in June 2013. Speck has been optimized
Speck_(cipher)
Proprietary protocol
text) Include past email items (duration) Email body truncation size HTML email body truncation size Include past calendar items (duration) Require manual
Exchange_ActiveSync
Block cipher
In cryptography, NUSH is a block cipher invented by Anatoly Lebedev and Alexey Volchkov for the Russian company LAN Crypto. It was submitted to the NESSIE
NUSH
Block cipher
Mercy is a tweakable block cipher designed by Paul Crowley for disk encryption. The block size is 4096 bits—unusually large for a block cipher, but a standard
Mercy_(cipher)
Block cipher
In cryptography, Nimbus is a block cipher invented by Alexis Machado in 2000. It was submitted to the NESSIE project, but was not selected. The algorithm
Nimbus_(cipher)
Machine instruction code that executes properly regardless of where in memory it resides
type systems. It has been in use through to today's IBM System/z. When coding in assembly language, the programmer has to establish addressability for
Position-independent_code
Block cipher
In cryptography, MMB (Modular Multiplication-based Block cipher) is a block cipher designed by Joan Daemen as an improved replacement for the IDEA cipher
MMB_(cipher)
Cipher
In cryptography, the Iraqi block cipher was a block cipher published in C source code form by anonymous FTP upload around July 1999, and widely distributed
Iraqi_block_cipher
Block cipher
In cryptography, KN-Cipher is a block cipher created by Kaisa Nyberg and Lars Knudsen in 1995. One of the first ciphers designed to be provably secure
KN-Cipher
Theory in statistics
significance in classical coding theory. In coding theory, association scheme theory is mainly concerned with the distance of a code. The linear programming
Association_scheme
Block cipher
In cryptography, Crab is a block cipher proposed by Burt Kaliski and Matt Robshaw at the first Fast Software Encryption workshop in 1993. Not really intended
Crab_(cipher)
Hash function that is suitable for use in cryptography
match. Typically the operation works on a block of input data; the hash output is then hashed with the next block, creating a new hash reflecting everything
Cryptographic_hash_function
Block cipher
symmetric-key block cipher notable for its simplicity. Designed by Ronald Rivest in 1994, According to Ron Rivest, RC stands for "Ron's Code" but its documentation
RC5
Block cipher
KASUMI is a block cipher used in UMTS, GSM, and GPRS mobile communications systems. In UMTS, KASUMI is used in the confidentiality (f8) and integrity
KASUMI
Project to optimize code for Embarcadero compilers
It returns the position of this occurrence.) CompareMem (Compares two blocks of memory.) CompareStr (Compares two strings of type AnsiString.) CompareText
FastCode
Block cipher
Seal (NDS) is a block cipher that was designed at IBM in 1975, based on the Lucifer algorithm that became DES. The cipher uses a block size of 128 bits
New_Data_Seal
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
Surname or Lastname
English
English : of uncertain origin; possibly a nickname for someone with thick curly hair, from Old French floc ‘stable of wool’. Alternatively, it may be a metonymic occupational name for a shepherd, from Old English flocc ‘herd’, ‘company’.German : unexplained.German (Flöck) : variant of Flück (see Fluck), or from a pet form of a personal name formed with Old Saxon flÅd ‘flood’.
Boy/Male
Native American
Black.
Boy/Male
German American English
Surname or Lastname
German
German : nickname for a man with some fancied resemblance to a he-goat, Middle High German boc, or a habitational name from a house distinguished by the sign of a goat.Altered spelling of German Böck (see Boeck) or Bach.Jewish (Ashkenazic) : ornamental name from German Bock ‘he-goat’.English : variant of Buck.
Surname or Lastname
English
English : unexplained; possibly from Middle English bleik, blek(e) ‘pallid’, ‘sallow’ (from Old Norse bleikr ‘pale’) with alteration of the vowel, although Reaney suggests it may be a nickname derived from Middle English blikie(n) ‘to shine or gleam’ (from Old English blīcian).Jewish (Ashkenazic) : origin uncertain; possibly from German Blick or Yiddish blik ‘glance’, ‘look’, and based on some now irrecoverable anecdote.German : Prussian variant of Blek, a nickname from Middle High German blic ‘shine’.German : short form of the Low German occupational name Blickslager ‘tinsmith’. Compare Bleck.German : from a short form of the Germanic personal name Bligger, Blickhart, based on blic ‘gleam’, ‘shine’, later ‘pale’.
Surname or Lastname
Scottish and English
Scottish and English : from Middle English blak(e) ‘black’ (Old English blæc, blaca), a nickname given from the earliest times to a swarthy or dark-haired man.Scottish and English : from Old English blÄc ‘pale’, ‘fair’, i.e. precisely the opposite meaning to 1, and a variant of Blake 2. Blake and Black are found more or less interchangeably in several surnames and place names.English : variant of Blanc as a Norman name. The pronunciation of the nasalized vowel gave considerable difficulty to English speakers, and its quality was often ignored.Scottish and Irish : translation of various names from Gaelic dubh ‘black’ (see Duff).Danish and Swedish : generally, probably the English and Scottish name, but in some cases perhaps a variant spelling of Blak, a nickname from blak ‘black’.In some cases, a translation of various names meaning ‘black’, for example German and Jewish Schwarz.
Girl/Female
Muslim
Clock
Boy/Male
English
Dark.
Male
English
The Badger
Boy/Male
American, Australian, British, Chinese, Christian, English, German, Indian, Irish
Stream; Badger
Boy/Male
British, English, Irish
Woods; Fortified Place; Bright; Radiant
Boy/Male
Muslim
Black
Male
English
Surname transferred to forename use, derived from Old English brocc BROCK means "badger."
Surname or Lastname
English
English : topographic name for someone who lived on a small plot of land, from Middle English plocke ‘small piece of ground’.Americanized spelling of German Ploch.Variant of German Block.
Surname or Lastname
German and Dutch
German and Dutch : from Middle High German bloch, Middle Dutch blok ‘block of wood’, ‘stocks’. The surname probably originated as a nickname for a large, lumpish man, or perhaps as a nickname for a persistent lawbreaker who found himself often in the stocks.English : possibly a metonymic occupational name for someone who blocks, as in shoemaking and bookbinding, from Middle English blok ‘block’.Jewish (Ashkenazic) : Americanized spelling of Bloch (see Vlach).Adriaen Coertsz Block was a Dutch-born merchant-explorer who traded along the CT coast and Long Island shortly after Hudson’s voyage to the region in 1609. Block Island, between the north fork of Long Island and RI, which he used as a base of operations, is named after him.
Boy/Male
Muslim
Black
Surname or Lastname
English
English : metonymic occupational name for a locksmith, from Middle English, Old English loc ‘lock’, ‘fastening’.English : topographic name for someone who lived near an enclosure, a place that could be locked, Middle English loke, Old English loca (a derivative of loc as in 1). Middle English loke also came to be used to denote a barrier, in particular a barrier on a river which could be opened and closed at will, and, by extension, a bridge. The surname may thus also have been a metonymic occupational name for a lock-keeper.English, Dutch, and German : nickname for a person with fine hair, or curly hair, from Middle English loc, Middle High German lock(e) ‘lock (of hair)’, ‘curl’.Americanized spelling of German Loch.
Boy/Male
American, Anglo, British, English
Dark; Dark Skinned
Girl/Female
Australian, Christian, Finnish, German, Latin, Swedish
Jet Black; Black Germ; Jet-black Gemstone; Coal Black
Surname or Lastname
English, Scottish, and North German
English, Scottish, and North German : variant of Brook.English, Scottish, and Scandinavian : nickname for a person supposedly resembling a badger, Middle English broc(k) (Old English brocc) and Danish brok (a word of Celtic origin; compare Welsh broch, Cornish brogh, Irish broc). In the Middle Ages badgers were regarded as unpleasant creatures.English : nickname from Old French broque, brock ‘young stag’.Dutch : from a personal name, a short form of Brockaert .South German : nickname for a stout and strong man from Middle High German brocke ‘lump’, ‘piece’.Jewish (Ashkenazic) : probably an acronymic family name from Jewish Aramaic bar- or Hebrew ben- ‘son of’, and the first letter of each part of a Yiddish double male personal name. Compare Brill.Jewish (from Poland) : habitational name from Brok, a place in Poland.
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
Boy/Male
Norse
From the ash tree.
Girl/Female
Indian
Light
Boy/Male
Hindu, Indian
Another Name for Lord Ganesh
Girl/Female
Hindu
Laughter
Girl/Female
Muslim/Islamic
Slave girl belonging to Zubaydah wife of Harun al-Rashid had this name
Boy/Male
Hindu
High hill
Girl/Female
Indian
The initiated
Boy/Male
Hindu
Every where, God
Boy/Male
British, Christian, English, German, Latin
Noble Friend; Intelligent; From Alba; A City on a White Hill
Boy/Male
Bengali, Hindu, Indian
Beloved
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
BLOCK TRUNCATION-CODING
n.
The act of truncating, lopping, or cutting off.
n.
A negro; a person whose skin is of a black color, or shaded with black; esp. a member or descendant of certain African races.
n.
To shape on, or stamp with, a block; as, to block a hat.
v. t.
To flock to; to crowd.
n.
A black pigment or dye.
n.
Mourning garments of a black color; funereal drapery.
v. t.
To lock, or fasten as with a lock.
v. t.
A piece of wood more or less bulky; a solid mass of wood, stone, etc., usually with one or more plane, or approximately plane, faces; as, a block on which a butcher chops his meat; a block by which to mount a horse; children's playing blocks, etc.
a.
Black as jet; deep black.
a.
To make black; to blacken; to soil; to sully.
a.
Having black eyes.
n.
A black garment or dress; as, she wears black
n.
The striking of a clock.
v. t.
A section of a railroad where the block system is used. See Block system, below.
n.
A lock of wool or hair.
v. t.
Any obstruction, or cause of obstruction; a stop; a hindrance; an obstacle; as, a block in the way.
a.
As black as coal; jet black; very black.
a.
In a less literal sense: Enveloped or shrouded in darkness; very dark or gloomy; as, a black night; the heavens black with clouds.