Lewis Short
pĕtōrĭtum | pĕtorrĭtum (noun N) : or , , Celtic petor, four, and rit, wheel
* An open, four - wheeled carriage, of Gallic origin: petoritum et Gallicum vehiculum esse, et nomen ejus dictum existimant a numero quattuor rotarum: alii Osce, quod hi quoque petora quattuor vocent: alii Graece, sed αιολικῶς dictum, Fest. p. 206 Müll.; Gell. 15, 30, 1; Hor. Ep. 2, 1, 192; id. S. 1, 6, 104; cf. also Plin. 34, 17, 48, § 163; Aus. Ep. 5, 35; 8, 5.
Charlton T. Lewis, Charles Short, A Latin Dictionary