sea dog

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noun

a sailor, especially an old or experienced one.

harbor seal.

a dogfish.

a pirate or privateer.

Origin of sea dog

First recorded in 1590–1600

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for sea dog

mariner, sailor, seafarer, shellback

British Dictionary definitions for sea dog

sea dog

noun

an experienced or old sailor

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