Clop

Noun

 * 1)  The sound of a horse's shod hoof striking the ground.

Verb

 * 1) To make this sound.

Thesaurus
bump, chink, click, clink, clump, clunk, crump, drub, dull thud, flick, flump, footfall, footstep, hippety-hop, hoofbeat, hop, jump, pace, pad, pat, patter, pitapat, pitter-patter, plump, plunk, pop, rap, skip, stamp, step, stomp, stride, tap, thud, thump, tick, tinkle, trample, tread, tunk