Cro*mor"na (kr?-m?r"n?), n. [F. cromorne (cf. It. cromorno0, fr. G. krummhorn crooked horn, cornet, an organ pipe turned like a trumpet; krumm crooked + horn horn.] (Mus.) A certain reed stop in the organ, of a quality of tone resembling that of the oboe. [Corruptly written cromona.]