M / Messēis
noun

Messēis

gen. Messeĭdis · gender feminine · decl. 3rd
a fountain in Thessaly; adj., of; belonging to the fountain Messēis
a fountain in Thessaly, Plin. 4, 8, 15, § 30.—As adj., of or belonging to the fountain Messēis: Messeides undae, Val. Fl. 4, 374.