30

from WordNet (r) 3.0 (2006)

30
    adj 1: being ten more than twenty [syn: {thirty}, {30}, {xxx}]
    n 1: the cardinal number that is the product of ten and three
         [syn: {thirty}, {30}, {XXX}]

from The Collaborative International Dictionary of English v.0.48

30 \30\ adj.
   1. one more than twenty-nine; three times ten; denoting a
      quantity consisting of thirty items or units; --
      representing the number thirty as an Arabic numeral.

   Syn: thirty, xxx
        [WordNet 1.5 +PJC]