succŭba

ae, comm.

1. succubo

I. One who lies under; hence, in mal. part., a lecher or strumpet (post-class.): florulentus, Prud. στεφ. 10, 192; cf. 2. succubo.—
II. Transf., a supplanter, rival: formae, App. M. 5, p. 171, 31: tori, id. ib. 10, p. 250, 18.
Lewis & Short
A Latin Dictionary, 1879
An open-access project