n. & adj.
--n.
1. one more than fourteen, or five more than ten; the product of three units and five units.
2 a symbol for this (15, xv, XV).
3 a size etc. denoted by fifteen.
4 a team of fifteen players, esp. in Rugby football.
5 (the Fifteen) hist. the Jacobite rebellion of 1715.
6 (15) Brit. (of films) classified as suitable for persons of 15 years and over.
--adj. that amount to fifteen.
Derivatives:
fifteenth adj. & n.
Etymology: OE fiftene (as FIVE, -TEEN)