Meaning of crupper

crup•per

Pronunciation: (krup'ur, kroop'-), [key]
— n.
  1. a leather strap fastened to the saddle of a harness and looping under the tail of a horse to prevent the harness from slipping forward. See illus. under
  2. the rump or buttocks of a horse.
  3. armor for the rump of a horse.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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