blackjack /ˈblækˌdʒæk/ (blackjacks)

• 1.  

  N-UNCOUNT（不可数名词） Blackjack is a card game in which players try to obtain a combination of cards worth 21 points. 21点扑克游戏

  例：

  Vicky has lost five hundred dollars playing blackjack.

  维琪玩21点扑克游戏输了500美元。

• 2.  

  N-COUNT（可数名词） A blackjack is a short, thick stick that is used as a weapon. (用作武器的短粗)棍棒 [美国英语][非正式]

  例：

  Police confiscated guns, knives and blackjacks.

  警察没收了各种枪支、刀具和棍棒。

• 3.  

  N（名词） a dark iron-rich variety of the mineral sphalerite 黑闪锌矿
• 4.  

  N（名词） a small oak tree, Quercus marilandica, of the southeastern US, with blackish bark and fan-shaped leaves 栎树 (Also called blackjack oak)
• 5.  

  N（名词） a tarred leather tankard or jug 外涂柏油的革制盛酒容器或者罐子
• 6.  

  V（动词） to hit with or as if with a blackjack 用棍棒打击