Lewis & Short

sēmĭ-hŏmo, ĭnis, m., a half-man, i. e. half man and half beast.

  1. I. Lit.: Centauri, Ov. M. 12, 536 (for which, semiferi, id. ib. 12, 406 al.; v. semifer, I.): mandragoras (because formed below like a man), Col. poët. 10, 19.
  2. II. Trop., half-human, i. e. half-wild, half-savage, = semifer, II.: Cacus, Verg. A. 8, 194 (for which, semifer, id. ib. 8, 267): Nasamones, Sil. 11, 180.