grampus

[ gram-puh s ]
/ ˈgræm pəs /

noun, plural gram·pus·es.

a cetacean, Grampus griseus, of the dolphin family, widely distributed in northern seas.
any of various related cetaceans, as the killer whale, Orcinus (Orca) orca.
a giant whip scorpion common to Florida.

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Origin of grampus

1520–30; earlier grampoys, variant (by assimilation) of graundepose great fish, equivalent to graunde grand + pose, poys < Middle French pois, peis < Latin pisce- (stem of piscis) fish; replacing Middle English gra(s)peis < Middle French ≪ Latin crassus piscis fat fish
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British Dictionary definitions for grampus

grampus
/ (ˈɡræmpəs) /

noun plural -puses

a widely distributed slaty-grey dolphin, Grampus griseus, with a blunt snout
another name for killer whale

Word Origin for grampus

C16: from Old French graspois, from gras fat (from Latin crassus) + pois fish (from Latin piscis)
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