1. The cardinal number equal to 5 × 10. 2.fiftiesa. 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.
ETYMOLOGY:
Middle English fifti, from Old English fftig. See penkwe in Appendix I.
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f
t
ftig. See penkwe in Appendix I.
