Meanings
blackjack1
plural blackjacks · alternative black jack · alternative black-jack
- countableuncountablecard gamesA common gambling card game in casinos, where the object is to get as close to 21 without going over.
Synonyms: pontoon, twenty-one, vingt-et-un
- countableuncountablecard gamesA 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).
- countableuncountablecard gamesA variant of hearts where the Jack of Spades is the penalty card.
- countableuncountableengineeringA 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.
2016, Justin O. Schmidt, The Sting of the Wild, Johns Hopkins University Press,, →ISBN, page 131 - countableuncountableaeronauticsA tool of leather filled with shot (or similar), resembling the weapon, used for shaping sheet metal.
- countableuncountableAny of several species of weed of genus Bidens, such as Bidens pilosa, in the family Compositae.
- abbreviationcountableellipsisuncountableEllipsis of blackjack oak.
A steep slope rose, crested by stunted blackjacks.
1931, William Faulkner, Sanctuary, Library of America, published 1985, page 201 more example
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.
1930, Edna Ferber, Cimarron, page 23 - countableuncountableAny of a series of hard, dark soils, often considered low quality, but suitable for growing certain crops such as cotton.
Cotton grew robustly in western Cabarrus County's blackjack soil, pointing Concord beyond its agricultural base toward its first industry: textiles.
2011, Michael Eury, Concord, Arcadia Publishing, →ISBN4 more examples
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.
1859, Henry Ward Beecher, Plain and Pleasant Talk about Fruits, Flowers, and Farming, page 216Blackjack soil is generally the poorest of all; it covers the narrow and rocky ridges, and has a stunted growth of blackjack and post oaks. The soil is dark in color, thin and cold, and is underlaid with pale yellow or slate-colored clay.
1884, United States Census Office, Census Reports: Tenth Census: June 1, 1880: Cotton production in the United States, page 20The predominant soil is the blackjack soil like that of the lower plateaus, seemingly, however, in most cases a little more sandy and a little coarser in grain.
1911, Field Operations of the Bureau of Soils, page 1871Today, most types of land development in areas underlain by Iredell and related “blackjack” soil series—a catch-all term for Jackland, Whitestore, Orange, Zion, and other high shrink-swell clayey soils—is generally discouraged.
2010, Gary Mark Fleeger, Steven J. Whitmeyer, The Mid-Atlantic Shore to the Appalachian Highlands: Field Trip Guidebook for the 2010 Joint Meeting of the Northeastern and Southeastern GSA Sections, Geological Society of America, →ISBN, page 48 - AustraliaUKcountablerareuncountablemedicineAmmonium bituminosulfonate.
Used to be called Black Jack think my mom had an ancient jar in her medicine cupboard.
2008 September 19, stef240377, MoneySavingExpert.com2 more examples
"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 duty!" says the doctor, and the sufferer sighs with relief.
1914 October 11, The Sunday Times, Perth, Australia, page 1, column 9I remember Black Jack very well and actually like the smell. It is no longer available with that trade name but glycerine of ichthammol can still be bought in chemists.
2010 October 19, John Davies, birminghamhistory.co.uk
present singular third person blackjacks · participle present blackjacking · participle past blackjacked · past blackjacked · alternative black jack · alternative black-jack
Blackjack2
plural Blackjacks
- slanglifestyleA fan of the South Korean girl group 2NE1.
It’s this sort of brash ethos that resonates with Blackjacks (as 2NE1’s fans are known).
2014, Chester Chin, "2NE1 in concert: Sassy and fierce", The Star (Malaysia), 29 May 20142 more examples
The queens of K-pop, 2NE1, are gearing up for their world tour in March and Blackjacks could not be more excited!
2014, Julie Carlson, "2NE1 Comeback", Hallyu Magazine, Issue #11, Winter 2014, page 41 (approx.)Most of these 'Blackjacks' have waited five years since 2NE1's debut to finally see the girls (CL, Bom, Dara, Minzy) perform a full show in Malaysia.
2014, Lainey, "2NE1 Gives Their All For Malaysia", Campus Plus, Issue 91, July 2014, page 58
Synonyms & antonyms
nounA common gambling card game in casinos, where the object is to get as close to 21 without going over.
More synonyms by meaning
nouna 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
nouna piece of metal covered by leather with a flexible handle; used for hitting people
nouna flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
nouna 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
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
blackjack · noun, verb
- Proto-Germanic*blakaz
- Proto-West Germanic*blak
- Old Englishblæc
- Middle Englishblak
- Englishblack
- Biblical Hebrewעָקַב
- Biblical Hebrewיַעֲקֹב (yaʿăqōḇ)
- Ancient GreekἸακώβ (Iakṓb)
- Ancient GreekἸάκωβος (Iákōbos)
- LatinIācōbusslbor.?
- FrenchJacques
- Middle EnglishJackin
- EnglishJack
- Englishjack
- Englishblackjack
Blackjack · noun
From the card game blackjack, also called twenty-one, which is one of two pronunciations of 2NE1's name (the other being "to anyone").
Full word history & related roots →Translations
Bulgarian блекджек, блекджек
- блекджек (blekdžek)card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- блекджек (blekdžek)hand
- пиратско знаме (piratsko zname)flag
- палка (palka)weapon
Chinese Cantonese 廿一點 /廿一点
- 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
- 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, piratenvlag
- eenentwintigencard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- piratenvlagflag
- ploertendoderweapon
Finnish blackjack, blackjack
- blackjackcard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- blackjackhand
- merirosvolippuflag
- rusokkiweed
- tainnutuspistooliweapon
French vingt-et-un, pavillon de pirates
- vingt-et-uncard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- pavillon de piratesflag
- matraqueweapon
German Blackjack, Einundzwanzig
- Blackjackcard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- Einundzwanzigcard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- Siebzehn und Viercard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- Totschlägerweapon
Indonesian selikuran
- selikurancard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Irish smachtín
- smachtínweapon
Japanese ブラックジャック
- 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
- 블랙잭 (beullaekjaek)card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Polish blackjack
- blackjackcard 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, vinte-e-um
- vinte e umcard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- vinte-e-umcard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
Russian блэкдже́к, два́дцать одно́
- блэкдже́к (blɛkdžék)card game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- 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)
- 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, bandera pirata
- veintiunacard game (the game where the aim is to score as close to twenty-one as possible without going over that amount)
- bandera pirataflag
Cite this entry
blackjack. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/blackjack
“blackjack.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blackjack. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “blackjack,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/blackjack.
Source: blackjack on Wiktionary, CC BY-SA 4.0.