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The large brownish aquatic larva of the dobsonfly, often used as fishing bait. Also called dobson.
[Probably hell (from its painful bite ) + -grammite, of unknown meaning and origin.]
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.
(Animals) US the larva of the dobsonfly, about 10 cm long with biting mouthparts: used as bait for bass. Also called: dobson
[C19: of unknown origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the aquatic larva of a dobsonfly, used as bait in fishing.
[1865–70, Amer.; orig. uncertain]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.