onager /onˈə-jər/

1. The wild ass of Central Asia
2. An ancient military engine for throwing great stones

• companionable
• companionableness
• companionably
• companion animal
• companion animals
• companionate
• companionate marriage
• companionate marriages
• companioned
• companion hatch
• companion hatches
• companionhood
• companionhoods
• companion-in-arms
• companioning
• companion ladder
• companion ladders
• companionless
• Companion of Literature
• companions
• companion set
• companion sets
• companionship
• companionships
• Companions of Honour