Lewis & Short

† hippŏmănes, is, n., = ἱππομανές (horse-heat, horse-rage).

  1. I. A slimy humor that flows from a mare when in heat, and which was used to excite desire, Verg. G. 3, 280 sq.; Tib. 2, 4, 8; Prop. 4, 5, 18 (cf. Verg. A. 4, 516).
  2. II. A plant that was supposed to put mares in heat, Serv. Verg. G. 3, 281.
  3. III. A small black membrane on the forehead of a new-born foal, used in making love-potions, Plin. 8, 42, 66, § 165; 28, 11, 49, § 180; Juv. 6, 132.