Lewis & Short

sēmĭ-mās, măris, m.

  1. I. Lit., a halfmale, hermaphrodite, Ov. M. 4, 381; 12, 506; Liv. 31, 12 fin.
  2. II. Transf., adj., unmanned, emasculated: capri, Varr. R. R. 3, 9, 3: semimares capi (appellantur), cum sint castrati, Col. 8, 2, 3: ovis, Ov. F. 1, 588: Galli (the priests of Cybele), id. ib. 4, 183.