Clop is the hollow, rhythmic sound a horse's hooves make when striking a hard surface like pavement or cobblestones. The word imitates the actual sound: clop, clop, clop. When you hear hoofbeats on a stone street, that distinctive clip-clop tells you a horse is nearby even before you see it.

The sound happens because horses often wear hard shoes made of metal, called horseshoes, which protect their hooves. On soft ground like grass or dirt, you barely hear anything, but on hard surfaces the metal shoes create that characteristic clopping noise.

Writers use “clop” to bring scenes to life: “The horse clopped down the cobblestone alley” helps readers hear what's happening. You might also hear clopping in old western movies when cowboys ride into town, or in historical films showing city streets before cars replaced horses. Today, you're most likely to hear actual clopping at a parade, a farm, or in areas where mounted police patrol on horseback.