From Longman Dictionary of Contemporary Englishiguanai‧gua‧na /ɪˈɡwɑːnə/ noun [countable] 
HBAa large tropical American lizard
HBAa large tropical American lizardExamples from the Corpus
iguana• Not surprisingly, when a person comes too close, an iguana will make a quick get away.• Boa constrictors bear live young but pythons don't; rattlesnakes and chameleons do, but cobras and iguanas don't.• Scrub hens bounced off the windshield and iguanas skated across the plane of the hood.• The number of imported iguanas has grown from 27,806 in 1986 to 798,405 in 1993.• While I was choosing it, the kids vanished into a nearby pet store where they discovered a nice little iguana.• This week, health officials are linking the death of a 3-week-old boy in Indiana to the pet iguana.• The iguana clings to the temple wall.Origin iguana (1500-1600) Spanish Arawakan iwana 