Messēis, ĭdis, f., = Μεσσηίς,
a fountain in Thessaly , Plin. 4, 8, 15, § 30.—As adj., of or belonging to the fountain Messēis : Messeides undae, Val. Fl. 4, 374.
MESSE´IS(Μεσσηΐς). 1. A fountain of Pherae in Thessaly. [PHERAE] ...
Dictionary of Greek and Roman Geography