Noun blackjack has 3 senses
  1. blackjack oak, blackjack, jack oak, Quercus marilandica - a common scrubby deciduous tree of central and southeastern United States having dark bark and broad 3-lobed (club-shaped) leaves; tends to form dense thickets
    --1 is a kind of scrub oak
  2. blackjack, cosh, sap - a piece of metal covered by leather with a flexible handle; used for hitting people
    --2 is a kind of bludgeon
  3. blackjack, twenty-one, vingt-et-un - a gambling game using cards; the object is to hold cards having a higher count than those dealt to the bank up to but not exceeding 21
    --3 is a kind of card game, cards
,Verb blackjack has 1 sense
  1. blackmail, blackjack, pressure - exert pressure on someone through threats
    --1 is one way to influence, act upon, work
    Sample sentence:
    Somebody ----s somebody
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