black·jack
noun/ˈblækdʒæk/
/ˈblækdʒæk/
- (British English also pontoon)[uncountable] a card game in which players try to collect cards with a total value of 21 and no more
21 点纸牌游戏（玩者力争取得 21 点的总点数） - [countable] (especially North American English) a type of club used as a weapon, especially a metal pipe covered with leather
（包革）金属棍棒，金属警棍