fifty fifty /ˈfɪfti/

adjective

1. () Being ten more than forty  ( l , fifty , 50 )
   being ten more than forty
     She purchased fifty balloons for the birthday party.
   She purchased fifty balloons for the birthday party.
   

noun

1. () The cardinal number that is the product of ten and five  ( L , fifty , 50 )
   the cardinal number that is the product of ten and five
    The speed limit on this road is fifty miles per hour
   The speed limit on this road is fifty miles per hour
   
   
2. A United States bill worth 50 dollars  ( fifty , fifty dollar bill )
   a United States bill worth 50 dollars