'Forties' definitions:

Definition of 'forties'

From: WordNet
noun
The time of life between 40 and 50 [syn: forties, mid- forties]
noun
The decade from 1940 to 1949 [syn: forties, 1940s]

Definition of 'Forties'

From: GCIDE
  • Forties \For"ties\, n. pl. See Forty. [1913 Webster]

Definition of 'Forties'

From: GCIDE
  • Forty \For"ty\, n.; pl. Forties (-t[i^]z).
  • 1. The sum of four tens; forty units or objects. [1913 Webster]
  • 2. A symbol expressing forty units; as, 40, or xl. [1913 Webster]