Noun fifty has 2 senses
- fifty, 50, L - the cardinal number that is the product of ten and five
--1 is a kind of decade, decennary, decennium; large integer; decade, decennary, decennium; large integer
- fifty dollar bill, fifty - a United States bill worth 50 dollars
--2 is a kind of time of life; bill, note, government note, bank bill, banker's bill, bank note, banknote, Federal Reserve note, greenback; time of life; bill, note, government note, bank bill, banker's bill, bank note, banknote, Federal Reserve note, greenback
--2 is a part of adulthood, maturity
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