fifty

(fĭfˈtē)

1. The cardinal number equal to 5 × 10.
2. fifties
   a. A decade or the numbers from 50 to 59: They began playing golf in their fifties. With the sunshine, the temperature reached the fifties.
   b. often Fifties The decade from 50 to 59 in a century.
3. A fifty-dollar bill.

Related Forms:

• fifˈty adjective & pron.