Dictionary Definition:
árvan mfn. running, quick (said of Agni and Indra) RV
• low, inferior, vile Uṇ
• (ā), m. a courser, horse RV. AV. ŚBr. N. of Indra ( before) L
• one of the ten horses of the moon L
• a short span L. (cf. árāvan.)