Pronunciation: (kongk, konch),[key] —n., —pl.conchsPronunciation: (kongks),[key]con•chesPronunciation: (kon'chiz).[key] 1. the spiral shell of a gastropod, often used as a horn.
2. any of various marine gastropods.
3. the fabled shell trumpet of the Tritons.
4. (often cap.)Slang(sometimes disparaging).
a. a native or inhabitant of the Florida Keys.
b. a Bahamian.
5. Also,concha.Archit.a smooth concave surface consisting of or resembling the interior of a semidome, as the surface of a vault, a trompe, or the head of a niche.