I·gua·na n.  Zool. Any species of the genus Iguana, a genus of large American lizards of the family Iguanidæ. They are arboreal in their habits, usually green in color, and feed chiefly upon fruits.
 Note: ☞ The common iguana (Iguana tuberculata) of the West Indies and South America is sometimes five feet long. Its flesh is highly prized as food.  The horned iguana (Iguana cornuta) has a conical horn between the eyes.
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