I*gua"na (?), n. [Sp. iguana, from the native name in Hayti. Cf. Guana.] (Zoöl.) 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.

&fist; The common iguana (Iguana iguana, formerly Iguana tuberculata, and also called by other synonyms@) 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.

• A large tropical American lizard that eats insects.