11

from WordNet (r) 3.0 (2006)

11
    adj 1: being one more than ten [syn: {eleven}, {11}, {xi}]
    n 1: the cardinal number that is the sum of ten and one [syn:
         {eleven}, {11}, {XI}]

from The Collaborative International Dictionary of English v.0.48

11 \11\ adj.
   1. denoting a quantity consisting of one more than ten and
      one less than twelve; -- representing the number eleven as
      Arabic numerals

   Syn: eleven, xi
        [WordNet 1.5 +PJC]