a large arboreal tropical American lizard with a spiny crest along the back and greenish coloration, occasionally kept as a pet 美洲鬣蜥
Genus Iguana, family Iguanidae: two species, in particular the common green iguana (I. iguana) 美洲鬣蜥属,美洲鬣蜥科:2种,尤指常见的美洲鬣蜥(拉丁名I. Iguana) ■any iguanid lizard 鬣蜥科蜥蜴