Or·gy·i·a prop. n. Zool.. A genus of bombycid moths whose caterpillars (esp. those of Orgyia leucostigma) are often very injurious to fruit trees and shade trees. The female is wingless. Called also vaporer moth.
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Va·por·er n. One who vapors; a braggart.
Vaporer moth. Zool. See Orgyia.
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