Lewis Short
(Subst.) : quādrŭ-pĕdans, antis, Part., from the obsol. quadrupedo [quadrupes].
* Going on four feet, galloping (poet. and postAug.): canterius,Plaut. Capt. 4, 2, 34: equo juxta quadrupedante,galloping close by on horseback,Plin. 8, 45, 70, § 182: sonitus,of a horse galloping,Verg. A. 8, 596.
* A galloping horse, a steed, courser (poet.): quadrupedantum Pectora,Verg. A. 11, 614.
Charlton T. Lewis, Charles Short, A Latin Dictionary