forties
noun
Definitions
The decade of the 1840s, 1940s, etc.
Synonyms:'40s40sThe decade of one's life from age 40 through age 49.
Example: They're both in their forties.
(temperature, rates) The range between 40 and 49.
Example: What to wear when the weather is in the forties really depends on whether you're talking fahrenheit or celsius.
adjective
Definitions
From or evoking the 41st through 50th years of a century (chiefly the 1940s).
Example: Two forties aircraft sat forgotten in the hangar until they were rediscovered by two trespassing teens.
noun
Definitions
A bottle of beer containing forty fluid ounces.