Meaning of thirty-one

thir•ty-one

Pronunciation: (thûr'tē-wun'), [key]
— n.
  1. a cardinal number, 30 plus 1.
  2. a symbol for this number, as 31 or XXXI.
  3. a set of this many persons or things.
—adj.
  1. amounting to 31 in number.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.