Any of various large aquatic reptiles,chiefly of the genus Crocodylus,native to tropical and subtropical regions and having thick,armorlike skin and long,tapering jaws.

• 鳄鱼，任一种原产于热带和亚热带地区的鳄属大型水栖爬行动物，生有厚的、甲状皮肤以及长而逐渐变细的尾巴。