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Latin. n. Cicada, tree-cricket, Athenian hair ornament in shape of cicada, summer season.

 - n. pl. E. Cicadas (- daz), L. Cicadæ (Zool.) Any species of the genus Cicada. They are large hemipterous insects, with nearly transparent wings. The male makes a shrill sound by peculiar organs in the under side of the abdomen, consisting of a pair of stretched membranes, acted upon by powerful muscles. A noted American species (C. septendecim) is called the seventeen-year locust. Another common species is the dog day cicada.