COCHLEA
cochlea
(noun) the snail-shaped tube (in the inner ear coiled around the modiolus) where sound vibrations are converted into nerve impulses by the organ of Corti
Source: WordNet® 3.1
Etymology
Noun
cochlea (plural cochleas or cochleae)
(anatomy) The complex, spirally coiled, tapered cavity of the inner ear in which sound vibrations are converted into nerve impulses.
A spiral-shaped shell, especially that of a snail.
Source: Wiktionary
Coch"le*a, n. Etym: [L., a snail, or snail shell, Gr. (Anat.)
Definition: An appendage of the labyrinth of the internal ear, which is
elongated and coiled into a spiral in mammals. See Ear.
Source: Webster’s Unabridged Dictionary 1913 Edition