lunker
lunk·er
(lŭng′kər)n. Informal
Something, especially a game fish, that is large for its kind.
[Origin unknown.]
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.
lunker
(ˈlʌŋkə)n
(Fishing) slang US an exceptionally large fish
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
lun•ker
(ˈlʌŋ kər)n.
something unusually large for its kind, esp. a large game fish.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.