12

from WordNet (r) 3.0 (2006)

12
    adj 1: denoting a quantity consisting of 12 items or units [syn:
           {twelve}, {12}, {xii}, {dozen}]
    n 1: the cardinal number that is the sum of eleven and one [syn:
         {twelve}, {12}, {XII}, {dozen}]

from The Collaborative International Dictionary of English v.0.48

12 \12\ adj.
   1. denoting a quantity consisting of 12 items or units; --
      representing the number twelve as Arabic numerals

   Syn: twelve, xii, dozen
        [WordNet 1.5 +PJC]

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