Croup

Part of speech: noun (n.)

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.

Part of speech: noun (n.)

An inflammatory affection of the larynx or trachea, accompanied by a hoarse, ringing cough and stridulous, difficult breathing; esp., such an affection when associated with the development of a false membrane in the air passages (also called membranous croup). See False croup, under False, and Diphtheria.