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Dictionary  clo•a•caPronunciation: (klō-ā'ku), [key] —n., —pl. -caePronunciation: (-sē). [key] 1. Zool. a. the common cavity into which the intestinal, urinary, and generative canals open in birds, reptiles, amphibians, many fishes, and certain mammals. b. a similar cavity in invertebrates. 2. a sewer, esp. an ancient sewer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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