a member of the radical movement that instituted the Reign of Terror during the French Revolution
例句
用作名词 (n.)
The vicomte, who was seeing him for the first time, saw clearly that this Jacobin was by no means so formidable as his words. 子爵头一次和他会面,可是他心里明白,这个雅各宾党人根本不像他的谈吐那样令人生畏。