Pĕlēthrŏnĭus — Lewis & Short
Pĕlēthrŏnĭus, a, um, adj.,
I of or belonging to a region of Thessaly inhabited by the Lapithœ and Centaurs, Pelethronian:
Lapithae,Verg. G. 3, 115:
antra,Luc. 6, 386:
pinus,a spear cut on the Pelethronian mountains, Stat. Th. 2, 593: Pelethronia cithara, of Achilles (because he, a native of Thessaly, had learned of Chiron the Thessalian to play the cithara), Auct. Priap. 17. —As subst.: pĕlēthrŏnĭa, ae, f., centaury, App. Herb. 34.