A hoofbeat is the sound made when a horse's hoof strikes the ground. If you've ever heard a horse walking on pavement, you know that distinctive clip-clop rhythm: that's the sound of hoofbeats.

The pattern of hoofbeats tells you what the horse is doing. A walk creates a slow, steady four-beat pattern as each hoof touches down separately. A trot produces a quicker two-beat rhythm. A gallop creates a thundering three-beat pattern that gets faster as the horse runs harder.

Before cars and trains, the sound of hoofbeats meant someone was approaching. In old Western movies, distant hoofbeats often signaled riders coming over the horizon. Poets and writers frequently describe hoofbeats because the sound is so distinctive and evocative: you can almost hear the thunder of hoofbeats just by reading those words.

Hoofbeats can suggest speed, urgency, and movement, which is why people still use phrases like “the hoofbeats of approaching cavalry” even when writing about modern times.