Definition of twenty-one in English:

twenty-one

Syllabification: twen·ty-one
Pronunciation: /ˌtwen(t)ēˈwən/

noun

The card game blackjack.

Definition of twenty-one in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal