plural forties
Definition of forty
1
: a number equal to four times 10 — see Table of Numbers
2
forties plural
: the numbers 40 to 49
specifically
: the years 40 to 49 in a lifetime or century
3
: the third point scored by a side in a game of tennis
4
or 40, US, informal
: a forty-ounce bottle or other container of an alcoholic beverage (such as beer or malt liquor)
Kelvin finished his forty in seven or eight long gulps. Tossed the bottle in the median carpeted with brown grass.— Dave Byrne … smoking weed and drinking 40s while her kids run loose.— Jim Schutze
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Merriam-Webster unabridged
Share forty
Time Traveler for forty
The first known use of forty was before the 12th century
See more words from the same century