GNU Collaborative International Dictionary of English
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Cicada , n.; pl. E. Cicadas , L. Cicadæ . [L.] (Zool.) Any species of the genus Cicada or of the family Cicadidae. 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 (Cicada septendecim) is called the seventeen year locust. Another common species is the dogday cicada.
Syn. -- cicala.1913 Webster