Blackjack

/ˈblækd͡ʒæk/ noun, verb, slang

noun, verb, slang ·Common ·High school level

Meaning at a glance

  • Primary sense: A common gambling card game in casinos, where the object is to get as close to 21 without going over.
  • Grammar: blackjack is listed as noun, verb, slang.
  • Nearest alternatives: all fours, baccarat, banker, bastinado.
  • Useful contrasts: deescalate, disarm, refrain.
  • Usage evidence: Tom usually loses at blackjack.

How to use "blackjack"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "blackjack" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "blackjack" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "blackjack" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "blackjack" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "blackjack" is acting as noun, verb, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "all fours" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "blackjack", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    A common gambling card game in casinos, where the object is to get as close to 21 without going over. countable, uncountable
  2. 2
    A fan of the South Korean girl group 2NE1. slang

    "The queens of K-pop, 2NE1, are gearing up for their world tour in March and Blackjacks could not be more excited!"

  3. 3
    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 wordnet
  4. 4
    A hand in the game of blackjack consisting of a face card and an ace. countable, uncountable
  5. 5
    a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship wordnet
Show 11 more definitions
  1. 6
    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
  2. 7
    a piece of metal covered by leather with a flexible handle; used for hitting people wordnet
  3. 8
    A variant of hearts where the Jack of Spades is the penalty card. countable, uncountable
  4. 9
    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 wordnet
  5. 10
    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
  6. 11
    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. countable, uncountable

    "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."

  7. 12
    A tool of leather filled with shot (or similar), resembling the weapon, used for shaping sheet metal. countable, uncountable
  8. 13
    Any of several species of weed of genus Bidens, such as Bidens pilosa, in the family Compositae. countable, uncountable
  9. 14
    Ellipsis of blackjack oak. abbreviation, alt-of, countable, ellipsis, uncountable

    "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."

  10. 15
    Any of a series of hard, dark soils, often considered low quality, but suitable for growing certain crops such as cotton. countable, uncountable

    "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."

  11. 16
    Ammonium bituminosulfonate. Australia, UK, countable, rare, uncountable

    ""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."

Verb
  1. 1
    To strike with a blackjack or similar weapon.

    "“We cannot have you getting blackjacked and bound yet again.”"

  2. 2
    exert pressure on someone through threats wordnet

Synonyms

All synonyms
all foursbaccaratbankerbastinadobatbattering ram

Example

"Tom usually loses at blackjack."

Common questions

What does "blackjack" mean?

A common gambling card game in casinos, where the object is to get as close to 21 without going over.

What is a synonym for "blackjack"?

Common synonyms include: all fours, baccarat, banker, bastinado, bat, battering ram.

How do you use "blackjack" in a sentence?

Tom usually loses at blackjack.

How do you pronounce "blackjack"?

Pronounced /ˈblækd͡ʒæk/.

Etymology

Etymology 1

From black + jack.

Etymology 2

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

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