iguana

plural iguanas

1. A green iguana (Iguana iguana), a large tropical American lizard often kept as a pet.

   The problem with keeping the green iguana as a pet is that they are often misfed. For example, some will feed them meat or meat-based foods […]

   2015, Rachel Smith, John Davidson, Lizards For Kids, page 18

2. biologyAny member of the genus Iguana.
3. colloquialIn America and the Pacific, any of several members of the lizard family Iguanidae.

   Marine iguanas line the shores of the islands, and are usually seen sprawled over lava rocks near the sea.

   1991, Martha Holmes, Sea Trek, BBC Books, page 44

4. colloquialIn Africa, any large member of the genus Varanus, especially the aquatic Nile monitor (see leguan).
5. AustraliaformerlyAny member of the genus Varanus (see goanna).

   The last they had had, was an iguana one of the blacks had brought in; and though he felt disgusted at the idea of eating it, he made up into a kind of stew, and they both enjoyed it immensely.

   1887, Harriet W. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 161