Either of two large reptiles, Alligator mississipiensis of the southeast United States or A. sinensis of China, having sharp teeth and powerful jaws. They differ from crocodiles in having a broader, shorter snout.

• 短吻鳄两种大型爬行动物，美国东南部的密西西比鳄或中国的扬子鳄中一种，它们有尖利的牙齿和有力的颚部。和一般鳄鱼相比它们有更宽，更短的鼻子