a seat composed of a plank suspended in a horizontal position from ropes, used by painters and other persons who work on the exteriors of buildings, ships, etc., while seated at a considerable height.
Origin of boatswain's chair
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for boatswain's chair
nautical a seat consisting of a short flat board slung from ropes, used to support a person working on the side of a vessel or in its rigging
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