caiman /ˈkeɪmən 
/ (also cayman) ▸ noun a semiaquatic reptile similar to the alligator but with a heavily armoured belly, native to tropical America. Caiman and other genera, family Alligatoridae: three species.
– ORIGIN late 16th century: from Spanish caimán, Portuguese caimão, from Carib acayuman.
EnglishOxford Dictionary of English
