black·jack /-ˌʤæk/
[紙牌] 二十一點
blackjack
n 1: 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 [syn:
blackjack oak, jack oak, Quercus marilandica]
2: a piece of metal covered by leather with a flexible handle;
used for hitting people [syn: cosh, sap]
3: 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 [syn: twenty-one, vingt-et-un]
v : exert pressure on someone through threats [syn: blackmail,
pressure]