sea cow


noun

any sirenian, as the manatee or dugong.
Obsolete. the hippopotamus.

Origin of sea cow

First recorded in 1605–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for sea cow

sea cow

noun

any sirenian mammal, such as a dugong or manatee
an archaic name for walrus
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