同义词： catapult arbalest arbalist ballista bricole mangonel onager trebuchet
同义词：catapultarbalestarbalistballistabricolemangonelonagertrebuchet
N（名词） a large medieval siege engine for hurling missiles consisting of a sling on a pivoted wooden arm set in motion by the fall of a weight (中世纪的)抛石机