Meaning

noun a disease of infants and young children; harsh coughing and hoarseness and fever and difficult breathing

noun the part of an animal that corresponds to the human buttocks

originFrom Scots croup, croop (“the croup”), from Scots croup, crowp, croop (“to croak, speak hoarsely, murmur, complain”), from Old Scots crowp, crope, croap (“to call loudly, croak”), alteration of rowp, roup, roip, rope (“to cry, cry hoarsely, roop”), from Middle English roupen, ropen, from Old English hrōpan (“to shout, proclaim; cry out, scream, howl”), from Proto-Germanic *hrōpaną (“to shout”),…

Etymology from Wiktionary, CC BY-SA 3.0