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Related to gill cleft: Gill Pouches
See gill slit.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||gill cleft - one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes|
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