/krup"euhr, kroop"-/ , 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 harness .
2. the rump or buttocks of a horse.
3. armor for the rump of a horse.
[ 1250-1300; ME cro ( u ) per, var. of cruper 2 , -ER 2 ]