Source : Webster's Revised Unabridged Dictionary (1913)

Cromorna \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}.]