mangonel

noun3

1. •
   (historical) A military engine formerly used for throwing stones and burning objects.
2. •
   (historical) A traction trebuchet (trebuchet operated by manpower).

   • The cavalry were on the wings and the siege-engines, mangonels and catapults, planted on sand-dunes. — 1934
3. •
   (nonstandard, historical) An onager (type of catapult).