fifteen

adj. & n. 1 one more than fourteen. 2 symbol for this (15, xv, xv). 3 size etc. Denoted by fifteen. 4 team of fifteen players, esp. In rugby. 5 (15) (of a film) for persons of 15 and over.  fifteenth adj. & n. [old english: related to *five, *-teen]

a. Five and ten; one more than fourteen.