conch: Meaning and Definition of

conch

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.) .
1. a native or inhabitant of the Florida Keys.
2. a Bahamian.
5. 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.