noun.
The cardinal number occurring after forty-nine and before fifty-one.
noun.
A fifty-dollar bill.
noun.
A fifty-pound note.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
being ten more than forty
noun.
the cardinal number that is the product of ten and five
noun.
a United States bill worth 50 dollars
Word Usage
"Lord Durham wrote, over fifty [Errata: (from final page) for _fifty_ read _forty_.] years ago, of the French Canadians: 'They are a people without a history and a literature.'"