1. The ally of the Romans under Pompey, who treacherously drew Crassus into an unfavorable position before his defeat. He is called Augarus by Dio Cassius (40.20), Acbarus the phylarch of the Arabians in the Parthian history ascribed to Appian (p. 34. Schw.), and Ariamnes by Plutarch. (Crass. 21.)