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The Collaborative International Dictionary
cromorna

cromorna \cro*mor"na\ (kr[-o]*m[^o]r"n[.a]), n. [F. cromorne (cf. It. cromorno), 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.]

Wiktionary
cromorna

n. An organ's reed stop of a quality of tone resembling that of the oboe.