twenty-one
[ twen-tee-wuhn, twuhn- ]
/ ˈtwɛn tiˈwʌn, ˈtwʌn- /
noun
a cardinal number, 20 plus 1.
a symbol for this number, as 21 or XXI.
a set of this many persons or things.
Also 21. Also called blackjack.
a gambling game at cards, in which the object is to obtain from the dealer cards whose values add up to, or close to, 21 but which do not exceed it.
adjective
amounting to 21 in number.