Wiktionary
boatswain's chair
n. (context nautical English) A short board or other seating, secured in a bridle of ropes, used to hoist a man aloft or over the ship’s side for painting and similar work.
WordNet
boatswain's chair
n. a seat consisting of a board and a rope; used while working aloft or over the side of a ship [syn: bosun's chair]
Usage examples of "boatswain's chair".
On the way up, Pig passed Profane swinging like a bird in a boatswain's chair hooked to the spar.