Origin: Germanic Old English prefix
Forty has 4 different meanings across 3 categories:
A bottle of beer containing forty fluid ounces.
"The barman handed me a forty, which was much larger than my usual glass."
"She won forty dollars in the raffle."
Usage: Use this term specifically to refer to large bottles of beer, such as those sold at bars or in liquor stores. It is often confused with the standard twelve-ounce can when discussing alcohol volume.
The cardinal number occurring after thirty-nine and before forty-one.
"The sign indicated that there were exactly forty guests at the party."
Forty comes from the Old English word fēowertiġ, which traces back to the Proto-Germanic root for forty. The modern spelling reflects a later combination of the number four and the suffix -ty.