Adjective fifty has 1 sense
  1. fifty, 50, l - being ten more than forty
    Antonym: ordinal (indirect, via cardinal)
,Noun fifty has 2 senses
  1. fifty, 50, L - the cardinal number that is the product of ten and five
    --1 is a kind of large integer
  2. fifty dollar bill, fifty - a United States bill worth 50 dollars
    --2 is a kind of bill, note, government note, bank bill, banker's bill, bank note, banknote, Federal Reserve note, greenback
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