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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.

Origin of gill raker

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