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Noun: blackjack  'blak,jak
  1. 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
    - blackjack oak, jack oak, Quercus marilandica
     
  2. A piece of metal covered by leather with a flexible handle; used for hitting people
    - cosh, sap
     
  3. A flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
    - black flag, pirate flag, Jolly Roger
     
  4. 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
    - twenty-one, vingt-et-un, pontoon [Brit]
Verb: blackjack  'blak,jak
  1. Exert pressure on someone through threats
    - blackmail, pressure

Derived forms: blackjacked, blackjacking, blackjacks

Type of: act upon, bludgeon, card game, cards, flag, influence, scrub oak, work

Encyclopedia: Blackjack