twenty-one

determiner

Compounds

Combines

Forms

  • twenty-one

Senses

  • the number between 20 and 22

twenty-one

noun

Compounds

Combines

In compounds

Forms

  • singular : twenty-one
  • plural : twenty-ones
  • singular : 21
  • plural : 21s

Senses

  • a number that is one more than twenty
  • blackjack: a card game the object of which is to be dealt cards having a higher count than those of the dealer up to but not exceeding 21