Lewis Short
(adjective) : sēmĭ-vĭr, vĭri, m.
* A half-man, i. q. semihomo and semimas (not anteAug.).
* Lit.
* Half man and half beast, e. g. the Centaur Chiron. Ov. F. 5, 380; the Minotaur,id. A. A. 2, 24 (cf. semibos): Nessus,id. H. 9, 141.
* Transf., emasculated.
* Lit., of a priest of Cybele (cf. semimas), Juv. 6, 513: semiviri chori,Sil. 17, 20: formosum adulescentem semivirum reddidit,Lact. 1, 17, 7.
* Trop., unmanly, womanish, effeminate: et nunc ille Paris cum semiviro comitatu,Verg. A. 4, 215: Phryx,id. ib. 12, 99; Lact. 1, 10, 9; Stat. Achill. 2, 363.—So esp. of debauchees: qui tam atrocem caedem pertinere ad illos semiviros crederent (for which, just before: molles and obsceni viri),Liv. 33, 28, 7: impure ac semivir,Luc. 8, 552.
Charlton T. Lewis, Charles Short, A Latin Dictionary