Messāpĭa (Mesāpĭa), ae, f., the old name of a part of Lower Italy (Apulia and Calabria): Messapia Apulia a Messapo rege appellata, Paul. ex Fest. p. 125 Müll.; cf. Plin. 3, 11, 16, § 99.
Hence, Messāpĭus (Mesāp-), a, um, adj., of or belonging to Messapia, Messapian, Apulian, Calabrian: arva, Ov. M. 14, 513.
In plur., as subst.: Messāpii (Mesāp-), ōrum, m., the Messapians, Liv. 8, 24.