Synonyms of twenty one

Noun

1. twenty-one, 21, XXI, large integer

usage: the cardinal number that is the sum of twenty and one

2. blackjack, twenty-one, vingt-et-un, card game, cards

usage: 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

Adjective

1. twenty-one, 21, xxi, cardinal (vs. ordinal)

usage: being one more than twenty