boatmate

noun

boat·​mate ˈbōt-ˌmāt 

plural boatmates

: a fellow crew member or passenger on a boat

… having trouble matching the stamina and pace of boatmates …

—Brian Cazeneuve, Sports Illustrated, 21 Aug. 2000

Nayden's boatmates lean out with nets and grab the shimmering fish as they somersault in the air.

—Bryan Walsh, Time, 23 Aug. 2010

Word History

First Known Use

1815, in the meaning defined above

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