boiler suit — A boiler suit consists of a single piece of clothing that combines trousers and a jacket. You wear it over your clothes in order to protect them from dirt while you are working.
overalls — overalls, (used with a plural verb) loose, sturdy trousers, usually with a bib or biblike piece to which shoulder straps are attached, originally worn over other trousers to protect them, as by factory workers or farmers. long waterproof leggings.
