IGUANA Meaning of IGUANA in English i ‧ gua ‧ na /ɪˈɡwɑːnə/ BrE AmE noun [countable] [ Date: 1500-1600 ; Language: Spanish ; Origin: Arawakan iwana ]a large tropical American ↑ lizard Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012