In the distance my ear caught a familiar sound—the clip-clop of horses trotting.
Suddenly the clip-clop, clip-clop of hoofs caused Duane to raise his head and listen.
But it was late in the afternoon when the clip-clop of horses' hoofs rang out over the crater of the ranch.
Through the open window came the jingle, and the "clip-clop" and the hum.
sound as of a horse's hooves, 1884, imitative.