1. (noun)
twenty-one, 21, XXI
- the cardinal number that is the sum of twenty and one Synonyms: twenty-one, blackjack, vingt-et-un
2. (noun)
blackjack, twenty-one, vingt-et-un
- 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 Synonyms: sap, blackflag, jack oak, blackjack, vingt-et-un, pirateflag, twenty-one, cosh, blackjack oak
3. (adj)
twenty-one, 21, xxi
- being one more than twenty Synonyms: xxi, twenty-one