quā^drīgārius, a, um,
adj. quadrigae, of or belonging to a four-horse (racing) chariot (post-Aug.): quadrigario habitu, in the dress of the driver of a quadriga, Suet. Calig. 17: pulvis, for the race-horses, Veg. Vet. 1, 56; 2, 28, 19: FAMILIA, slaves who took care of the race-horses, Inscr. Grut. 339, 5.
— Hence, as subst.: quā^drīgārius, ii, m., one who drives a four-horse chariot in the circus, a chariot-racer (class.), Varr. R. R. 2, 7: in victoriā, Cic. Fragm. Or. in Toga Cand. ap. Ascon.; Suet. Ner. 16; Arn. 2, 70; Paul. ex Fest. p. 36, 12 Mull.