Lewis Short
prō-lŭbĭum (noun N) : lubet.
* Subject., will, desire, inclination (ante- and post-class.): muliebre ingenium, prolubium, occasio, Att. ap. Non. 64, 8; Novat. and Laber. ib. 10 and 12; Ter. Ad. 5, 9, 28; Gell. 16, 19, 12.
* Object., pleasure (postclass.): majus,Gell. 5, 10, 12: libidinis,App. M. 10, p. 249, 4.
Charlton T. Lewis, Charles Short, A Latin Dictionary