Twelfth can mean:

  • The Twelfth Amendment to the United States Constitution.
  • The Twelfth, a Protestant celebration originating in Ireland.

In mathematics:

  • 12th, an ordinal number; as in the item in an order twelve places from the beginning, following the eleventh and preceding the thirteenth.
  • 1/12, a vulgar fraction, one part of a unit divided equally into twelve parts.

Read more about Twelfth:  Music

Famous quotes containing the word twelfth:

    The twelfth day of Christmas,
    My true love sent to me
    Twelve lords a-leaping.
    —Unknown. The Twelve Days of Christmas (l. 89–91)