blackjack

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blackjack^¹

/ˈblækd͡ʒæk/

noun blackjacks · black jack · black-jack

countable, uncountable A common gambling card game in casinos, where the object is to get as close to 21 without going over.
Similar: pontoon, twenty-one, vingt-et-un
countable, uncountable A hand in the game of blackjack consisting of a face card and an ace.
countable, uncountable 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).
countable, uncountable A variant of hearts where the Jack of Spades is the penalty card.
countable, uncountable 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).
countable, uncountable 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. The pain is sometimes like the dull, heavy thud of being hit with a lead-filled blackjack; other times like a wizard is reaching deep below the skin and ripping muscles, tendons, and nerves.
countable, uncountable A tool of leather filled with shot (or similar), resembling the weapon, used for shaping sheet metal.
countable, uncountable Any of several species of weed of genus Bidens, such as Bidens pilosa, in the family Compositae.
abbreviation, countable, ellipsis, uncountable Ellipsis of blackjack oak A little creek ran through the land, and the prairie rolled a little there, too. Nothing but blackjacks for miles around it, but on that section, because of the water, I suppose, there were elms and persimmons and cottonwoods and even a grove of pecans.
countable, uncountable Any of a series of hard, dark soils, often considered low quality, but suitable for growing certain crops such as cotton. This man had a brother about six miles off, settled on a rich White River bottom-land farm -- and while a blackjack clay soil yielded seventy bushels to the acre, this fine bottom-land would not average fifty.
Australia, UK, countable, rare, uncountable Ammonium bituminosulfonate. "Next!" steps gingerly in to confront the medical eye fastened questioningly upon him. "Crook in the guts," he says tersely. The picturesque reports of previously treated and disgusted patients - have left him doubtful, and he casts, an anathematising eye upon the "Black Jack" bottle. "Tabloids and

verb blackjacks · blackjacking · blackjacked · black jack · black-jack

To strike with a blackjack or similar weapon. “We cannot have you getting blackjacked and bound yet again.”

Blackjack^²

Where it comes from

From the card game blackjack, also called twenty-one, which is one of two pronunciations of 2NE1's name (the other being "to anyone").

noun Blackjacks

slang A fan of the South Korean girl group 2NE1. The queens of K-pop, 2NE1, are gearing up for their world tour in March and Blackjacks could not be more excited!

Thesaurus

Closest in meaning: twenty-one, vingt-et-un, blackmail, cosh, pressure, sap, blackjack oak, jack oak, quercus marilandica, craps, baton, truncheon, mace, club, stick, pontoon

Translations

Every language

noun weapon

Français	matraque
Deutsch	Totschläger

noun card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)

Español	veintiuna
한국어	블랙잭 beullaekjaek
日本語	ブラックジャック burakkujakku
中文	二十一點 /二十一点 èrshíyī diǎn
Português	vinte e um, vinte-e-um
Français	vingt-et-un
Deutsch	Blackjack, Einundzwanzig, Siebzehn und Vier
Русский	блэкдже́к blɛkdžék, два́дцать одно́ dvádcatʹ odnó, очко́ očkó

noun flag

Español	bandera pirata
Français	pavillon de pirates

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Cite this

MLA

"blackjack." Wiktionary, via Micwyn, micwyn.com/word/blackjack. Accessed 6 Nov. 2026.

APA

blackjack. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/blackjack

Chicago

"blackjack." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/blackjack.

BibTeX

@misc{blackjack_2026,
  title = {blackjack},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/blackjack},
  urldate = {2026-11-06}
}