mangonel(n = noun.artifact) arbalest, arbalist, ballista, bricole, catapult, onager, trebuchet, trebucket - an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles;
is a kind of engine

   A military engine formerly used for throwing stones and javelins. [1913 Webster]

mangonel, n. Mil. hist. a military engine for throwing stones etc.

Etymology:
ME f. OF mangonel(le), f. med.L manganellus dimin. of LL manganum f. Gk magganon