Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun blackjack

4 senses of blackjack

Sense 1
blackjack oak, blackjack, jack oak, Quercus marilandica -- (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)
       => scrub oak -- (any of various chiefly American small shrubby oaks often a dominant form on thin dry soils sometimes forming dense thickets)

Sense 2
blackjack, cosh, sap -- (a piece of metal covered by leather with a flexible handle; used for hitting people)
       => bludgeon -- (a club used as a weapon)

Sense 3
black flag, pirate flag, Jolly Roger, blackjack -- (a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship)
       => flag -- (emblem usually consisting of a rectangular piece of cloth of distinctive design)

Sense 4
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 banker up to but not exceeding 21)
       => card game, cards -- (a game played with playing cards)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb blackjack

1 sense of blackjack

Sense 1
blackmail, blackjack, pressure -- (exert pressure on someone through threats)
       => influence, act upon, work -- (have and exert influence or effect; "The artist's work influenced the young painter"; "She worked on her friends to support the political candidate")