DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   fifty
       adj 1: being ten more than forty [syn: fifty, 50, l]
       n 1: the cardinal number that is the product of ten and five
            [syn: fifty, 50, L]
       2: a United States bill worth 50 dollars [syn: fifty dollar
    bill, fifty]