Answer:
"Curple" applies to a "butt cheek", either of the buttocks. The plural "curples" (Scottish "cruppers") is a synonym for posterior or rump as applied to horses.

(Note : many English dictionaries list neither singular nor plural.)

First answer by Dfoofnik. Last edit by Dfoofnik. Contributor trust: 2552 [recommend contributor recommended]. Question popularity: 0 [recommend question].