boatswain : Idioms & Phrases
boatswain bird
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noun mostly white web-footed tropical seabird often found far from land
tropic bird; tropicbird.
WordNet
boatswain's chair
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noun a seat consisting of a board and a rope; used while working aloft or over the side of a ship
bosun's chair.
WordNet
Boatswain's mate
- an assistant of the boatswain.