noun
- a cardinal number, ten plus five.
- a symbol for this number, as 15 or XV.
- a set of this many persons or things.
adjective
- amounting to 15 in number.
noun
- the cardinal number that is the sum of ten and five
- a numeral, 15, XV, etc, representing this number
- something represented by, representing, or consisting of 15 units
- a rugby union football team
determiner
-
- amounting to fifteenfifteen jokes
- (as pronoun)fifteen of us danced
noun
- the Fifteen British history the Jacobite rising of 1715
Old English fiftyne, from fif “five” (see five) + tyne (see -teen). Cf. Old Saxon fiftein, Old Frisian fiftine, Old Norse fimtan, Swedish femton, Dutch vijftien, German fünfzehn, Gothic fimftaihun “fifteen.” French quinze, Italian quindici “fifteen” are from Latin quindecim (see Quatorze).