fifteen Meaning, Definition & Usage

  1. noun the cardinal number that is the sum of fourteen and one
    15; XV.
  2. adjective satellite being one more than fourteen
    15; xv.

WordNet

Fif"teen` adjective
Etymology
OE. fiftene, AS. fiftne, fiftne. See Five, and Ten, and cf. Fifty.
Definitions
  1. Five and ten; one more than fourteen.
Fif"teen` noun
Definitions
  1. The sum of five and ten; fifteen units or objects.
  2. A symbol representing fifteen units, as 15, or xv.

Webster 1913