LATIN DICTIONARYLexicon Latīnum
noun

prostŏmis

Meaning

  1. an instrument to hold a horse by the nose

prostŏmis, ĭdis, f., = προστομίς,
I. an instrument to hold a horse by the nose, a barnacle, twitch, beak; trop., a drinkingvessel, Lucil. ap. Non. 1, n. 84 (others read postomis, q. v.).

Quick answers

What does prostŏmis mean in Latin?
prostŏmis, a noun, means “an instrument to hold a horse by the nose”.