Sentence:  They ran to the village screaming at the top of their lungs that an <WSD>alligator</WSD> was coming after them. Several of the men in Alimacani retrieved from a storehouse the tool they used to catch <WSD>alligators</WSD>. 
Meaning of the word marked with <WSD> tags:  Either of two species of large amphibious reptile, "Alligator mississippiensis" or "Alligator sinensis", in the genus "Alligator" within order Crocodilia, which have sharp teeth and very strong jaws and are native to the Americas and China, respectively.