black jack

black jack汉语翻译：
【机】 方锌矿英语解释：
名词 black jack:

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同义词：blackjack oak, blackjack, jack oak, Quercus marilandica

a piece of metal covered by leather with a flexible handle; used for hitting people同义词：blackjack, cosh, sap

a flag usually bearing a white skull and cros***ones on a black background; indicates a pirate ship同义词：black flag, pirate flag, Jolly Roger, blackjack

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同义词：blackjack, twenty-one, vingt-et-un

exert pressure on someone through threats同义词：blackmail, blackjack, pressure