Lewis & Short

† sīmus, a, um, adj., = σιμός, flat-nosed, snub-nosed (cf. silus).

    1. 1. Lit.: avibus, serpentibus, piscibus, foramina tantum ad olfactus sine naribus, et hinc cognomina Simorum, Plin. 11, 37, 59, § 158: pecus Nerei, i. e. dolphins, Liv. Andron. ap. Non. 335, 22 (Trag. Rel. p. 1 Rib.); cf.: rostrum delphini, Plin. 9, 8, 7, § 23: capellae, Verg. E. 10, 7: puer simā nare, Mart. 6, 39, 8; Cels. 8, 10, 7.
    2. 2. Trop., Verg. M. 107.