Medieval stone throwers

• Wild asses or catapults
• Donkey relatives
• Catapults of early warfare, which threw stones
• Wild Asian equines
• Equids, one of them hidden by rambling rose
• An ogre's destroyed due to stone-hurlers
• Asses wild?
• Wild asses of central Asia

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Onager \On"a*ger\, n.; pl. L. Onagri , E. Onagers . [L. onager, onagrus, Gr. ?.] (Rom. Antiq.) A military engine acting like a sling, which threw stones from a bag or wooden bucket, and was operated by machinery. --Fairholt. (Zo["o]l.) A wild ass of central ...