P / prostŏmis
noun greek

prostŏmis

gen. prostŏmĭdis · gender feminine · decl. 3rd
= προστομίς
an instrument to hold a horse by the nose; a barnacle; twitch
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.).