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Related to gill net: drift net
A fishing net set vertically in the water so that fish swimming into it are entangled by the gills in its mesh.
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.
(Fishing) fishing a net suspended vertically in the water to trap fish by their gills in its meshes
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a curtainlike net, suspended vertically in the water, with meshes of such a size as to catch by the gills a fish that has thrust its head through.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.