twenty

from WordNet (r) 3.0 (2006)

twenty
    adj 1: denoting a quantity consisting of 20 items or units [syn:
           {twenty}, {20}, {xx}]
    n 1: the cardinal number that is the sum of nineteen and one
         [syn: {twenty}, {20}, {XX}]
    2: a United States bill worth 20 dollars [syn: {twenty dollar
       bill}, {twenty}]

from The Collaborative International Dictionary of English v.0.48

Twenty \Twen"ty\, n.; pl. {Twenties}.
   1. The number next following nineteen; the sum of twelve and
      eight, or twice ten; twenty units or objects; a score.
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   2. A symbol representing twenty units, as 20, or xx.
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from The Collaborative International Dictionary of English v.0.48

Twenty \Twen"ty\ (tw[e^]n"t[y^]), a. [OE. twenty, AS.
   tw[=e]ntig, twentig; akin to OFries. twintich, OS.
   tw[=e]ntig, D. & LG. twintig, OHG. zweinzug, G. zwanzig,
   Goth. twai tigjis; that is, two tens. See {Twain}, {Two}, and
   {Ten}.]
   1. One more than nineteen; twice ten; as, twenty men.
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   2. An indefinite number more or less that twenty. --Shak.
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            Maximilian, upon twenty respects, could not have
            been the man.                         --Bacon.
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