blackjackKK [ˋblæˏkdʒæk] /ˈblæˌkdʒæk/名詞1二十一點紙牌遊戲He lost most of his money playing blackjack at the casino.他在賭場玩二十一點,把大部分的錢都輸掉了。2短棍、皮包鐵棍美式The guard carried a blackjack tucked into his belt.那名警衛腰帶上插著一根短棍。