noun, plural fall·fish·es, (especially collectively) fall·fish.

a large minnow, Semotilus corporalis, of eastern North America.

Origin of fallfish

An Americanism dating back to 1805–15; fall + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fallfish


noun plural -fish or -fishes

a large North American freshwater cyprinid fish, Semotilus corporalis, resembling the chub
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012