onager
1. [ noun ] (military,medieval,arms) medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles
Synonyms: bricole arbalest arbalist ballista mangonel trebuchet trebucket catapult
Related terms: artillery catapult
2. [ noun ] (zoology) Asiatic wild ass
Synonyms: Equus_hemionus
Related terms: wild_ass chigetai
Similar spelling:   on_guard