twenty-one

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

1. the cardinal number that is the sum of twenty and one (Freq. 1)
• Syn:
21, XXI
• Hypernyms:
large integer
2. a gambling game using cards;
the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21
• Syn:
blackjack, vingt-et-un
• Hypernyms:
card game, cards

II - adjective

being one more than twenty (Freq. 3)
• Syn:
21, xxi
• Similar to:
cardinal