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Related to croupous: Croupous pneumonia, croupous inflammation

croup 1

A pathological condition of the larynx, especially in infants and children, that is characterized by respiratory difficulty and a hoarse, brassy cough.

[From dialectal croup, to croak.]

croup′ous (kro͞o′pəs), croup′y adj.

croup 2

The rump of a beast of burden, especially a horse.

[Middle English croupe, from Old French, of Germanic origin.]