This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A sharp hollow sound, as of a horse's hoof striking pavement.

verb-intransitive. To make or move with this sound.

n. The sound of a horse's shod hoof striking the ground.

v. To make this sound.

n. the sound of a horse's hoofs hitting on a hard surface

v. make or move along with a sound as of a horse's hooves striking the ground

"The only sounds to be heard in his cavernous showroom-turned-theatre once the French communist party HQ, was the clip-clop of high heels on the PVC catwalk, and the calm, studied voice of the "announcer" who introduced each design by number, together with a detailed description of the silhouette and materials, in French, and then in English."

clopped    clopping    clops   

sound    go   

clopped    clopping   

clopping    clacking    trample    clack    drumbeat    clank    whoosh    pattering    clumping    plod