cervicula

cervīcŭla, ae, f. dim. [cervix].

I A small neck , * Cic. Verr. 2, 3, 19, § 49; Ap. Flor. p. 348: contracta, Quint. 11, 3, 180.—*

II In mechanics, the neck of a hydraulic machine , Vitr. 10, 8, 2.