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gill raker

[gil]
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noun
  1. (in fish) one of a series of stiff projections along the inner margins of the branchial arches that prevent food particles from passing through the branchial clefts.
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Origin of gill raker

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018