‖On″a‐ger (?), n.; pl. L. Onagri (#), E. Onagers (#). [L. onager, onagrus, Gr. �.] 1. (Rom. Antiq.) A military engine acting like a sling, which threw stones from a bag or wooden bucket, and was operated by machinery. Fairholt.
2. (Zoöl.) A wild ass, especially the koulan.