'Thirteen' definitions:

Definition of 'thirteen'

From: WordNet
adjective
Being one more than twelve [syn: thirteen, 13, xiii]
noun
The cardinal number that is the sum of twelve and one [syn: thirteen, 13, XIII, baker's dozen, long dozen]

Definition of 'Thirteen'

From: GCIDE
  • Thirteen \Thir"teen`\ (th[~e]r"t[=e]n`), a. [OE. threttene, AS. [thorn]re['o]t[=e]ne, [thorn]re['o]tyne. See Three, and Ten, and cf. Thirty.] One more than twelve; ten and three; as, thirteen ounces or pounds. [1913 Webster]

Definition of 'Thirteen'

From: GCIDE
  • Thirteen \Thir"teen`\, n.
  • 1. The number greater by one than twelve; the sum of ten and three; thirteen units or objects. [1913 Webster]
  • 2. A symbol representing thirteen units, as 13 or xiii. [1913 Webster]