[twen-tee-wuhn, twuhn-]
See more synonyms for twenty-one on
  1. a cardinal number, 20 plus 1.
  2. a symbol for this number, as 21 or XXI.
  3. a set of this many persons or things.
  4. 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.
  1. amounting to 21 in number. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for twenty-one

poker, roulette, bridge, lottery, bingo, canasta, gin, lotto, pinochle, twenty-one

Examples from the Web for twenty-one

Contemporary Examples of twenty-one

Historical Examples of twenty-one

  • Some say when he was twenty-one, as soon as his wife presented him with twins, in 1585.

  • "I'm twenty-one and she's eighteen," hummed the ward under its breath.


    Mary Roberts Rinehart

  • The barytone was still singing; but now it was "I'm twenty-one, and she's eighteen."


    Mary Roberts Rinehart

  • There are forty-one of these ribs, twenty-one on the upper and twenty on the lower plane.

    Flying Machines

    W.J. Jackman and Thos. H. Russell

  • All the sales of sheep and lambs are by the "clad score" which contains twenty-one.

British Dictionary definitions for twenty-one


  1. another name (esp US) for pontoon 2 (def. 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012