Croup (kr??p), n. [F. croupe hind quarters, croup, rump, of German or Icel. origin; cf. Icel. kryppa hump; akin to Icel. kroppr. Cf. Crop.] The hinder part or buttocks of certain quadrupeds, especially of a horse; hence, the place behind the saddle.
So light to the croup the fair lady he swung,
So light to the saddle before her he sprung.
Sir W. Scott.