Lewis Short
(adjective) : Pĕlēthrŏnĭus, a, um
* Of or belonging to a region of Thessaly inhabited by the Lapithoe 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.
Charlton T. Lewis, Charles Short, A Latin Dictionary