The Collaborative International Dictionary of English v.0.48:
Alligatoridae \Alligatoridae\ n. 1. 1 the family of reptiles comprising the alligators, and including the caimans. Syn: family Alligatoridae. [WordNet 1.5]WordNet (r) 3.0 (2006):
Alligatoridae n 1: alligators; caimans [syn: Alligatoridae, family Alligatoridae]