noun · verb · 18 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
blăk'jăk
/ˈblækd͡ʒæk/
Southern-England:Recorded audio is listed in the source snapshot.
Australia:Recorded audio is listed in the source snapshot.
CMU ARPABET:B L AE1 K JH AE2 K
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A common gambling card game in casinos, where the object is to get as close to 21 without going over.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: card-games, games
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: pontoon, twenty-one, vingt-et-un
Antonyms: none provided
2
noun
Meaning 2
A hand in the game of blackjack consisting of a face card and an ace.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: card-games, games
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A variant of switch where each player is initially dealt the same number of cards, usually seven, and when one player plays a black jack the player whose turn comes next has to pick up that many cards, unless they play a red jack (as this normally cancels a black jack).
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: card-games, games
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
A variant of hearts where the Jack of Spades is the penalty card.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: card-games, games
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
The flag (i.e., a jack) traditionally flown by pirate ships; popularly thought to be a white skull and crossed bones on a black field (the Jolly Roger).
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
A small, flat, blunt, usually leather-covered weapon loaded with heavy material such as lead or ball bearings, intended to inflict a blow to the head that renders the victim unconscious with diminished risk of lasting cranial trauma.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: engineering, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
noun
Meaning 7
A tool of leather filled with shot (or similar), resembling the weapon, used for shaping sheet metal.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
12
noun
Meaning 12
A fan of the South Korean girl group 2NE1.
Definition source: English Wiktionary via Wiktextract
Usage: slang
Topics: lifestyle
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
13
verb
Meaning 13
To strike with a blackjack or similar weapon.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
14
noun
Meaning 14
a gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: twenty-one, vingt-et-un
Antonyms: none provided
Broader terms: card game, cards
15
noun
Meaning 15
a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: black flag, pirate flag, Jolly Roger
Antonyms: none provided
Broader terms: flag
16
noun
Meaning 16
a piece of metal covered by leather with a flexible handle; used for hitting people
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: cosh, sap
Antonyms: none provided
Broader terms: bludgeon
17
noun
Meaning 17
a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: blackjack oak, jack oak, Quercus marilandica
Antonyms: none provided
Broader terms: scrub oak
18
verb
Meaning 18
exert pressure on someone through threats
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: blackmail, pressure
Antonyms: none provided
Broader terms: influence, act upon, work
History
Etymology
Etymology tree Proto-Germanic *blakaz Proto-West Germanic *blak Old English blæc Middle English blak English black English jack English blackjack From black + jack.
From the card game blackjack, also called twenty-one, which is one of two pronunciations of 2NE1's name (the other being "to anyone").
Across languages
Translations
39 source translations are retained for this English entry.
Bulgarian:
блекджек
(blekdžek)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Chinese Cantonese:
廿一點 /廿一点
(jaa6 jat1 dim2)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Chinese Mandarin:
二十一點 /二十一点
(èrshíyī diǎn)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Dutch:
eenentwintigen
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Finnish:
blackjack
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
French:
vingt-et-un
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Galician:
bandeira pirata
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Galician:
vinte e un
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
German:
Blackjack
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
German:
Einundzwanzig
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
German:
Siebzehn und Vier
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Indonesian:
selikuran
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Japanese:
ブラックジャック
(burakkujakku)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Korean:
블랙잭
(beullaekjaek)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Marathi:
ब्लॅकजॅक
(blĕkjĕk)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Polish:
blackjack
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Portuguese:
vinte e um
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Portuguese:
vinte-e-um
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Russian:
блэкдже́к
(blɛkdžék)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Russian:
два́дцать одно́
(dvádcatʹ odnó)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Russian:
очко́
(očkó)
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Spanish:
veintiuna
— card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)