Lewis & Short

bĭcornis, e [bis-cornu].

  1. I. Adj., having two horns, two-horned (poet. or in postAug. prose): animal, Plin. 11, 46, 106, § 255: caper, Ov. M. 15, 304: fauni, id. H. 4, 49; id. F. 2, 268; 5, 99.
    Poet., of a two-pronged fork: furcae, Verg. G. 1, 264; Ov. M. 8, 647: ferrum, Col. Poët. 10, 148.
    Of the new moon, * Hor. C. S. 35.
    Of rivers with two mouths (perh. only epith. ornans; cf. amnis init.): Rhenus, Verg. A. 8, 727: Granicus, Ov. M. 11, 763.
    Of the top of Parnassus: jugum, Stat. Th. 1, 63 (cf. biceps).
  2. II. Subst.: bĭcornes, horned animals for sacrifice: AVRATA. FRONTE. BICORNES., Inscr. Orell. 2335.