The Collaborative International Dictionary
Cotyle
Cotyla \Cot"y*la\ (k?t"?-l?), Cotyle \Cot"y*le\ (k?t"?-l?), n. [Gr. ??? anything hollow, cup of a joint, small meassure: cf. L. cotyla a measure.] (Anat.) A cuplike cavity or organ. Same as Acetabulum.
Wiktionary
cotyle
n. Any of several cup organs in various animals