Dictionary.com
Thesaurus.com
Synonyms

twenty-one

American  
[twen-tee-wuhn, twuhn-] / ˈtwɛn tiˈwʌn, ˈtwʌn ti- /

noun

  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. Cards. Also 21. blackjack.


adjective

  1. amounting to 21 in number.

twenty-one British  

noun

  1. another name (esp US) for pontoon 2

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The capsule bounced in the waves for twenty-one minutes, until the navy destroyer Noa picked him up.

From Literature

Just twenty-one years after World War I ended, World War II erupted, killing four times as many people.

From Literature

One hundred twenty-one of the 594 athletes on the American team — more than one in five — are from the state.

From Los Angeles Times

And by twenty-one, he had taken control of all the property and people he had inherited from his father.

From Literature

“If you’re coming and you’re over twenty-one, my question is, ‘why now?’” he explained, referring to the legal buying age in Florida.

From Seattle Times