forties Meaning, Definition & Usage

  1. noun the time of life between 40 and 50
    mid-forties.
  2. noun the decade from 1940 to 1949
    1940s.
  3. noun the cardinal number that is the product of ten and four
    XL; forty; 40.

WordNet

For"ties noun plural
Definitions
  1. See Forty.

Webster 1913