Definition of boiler suit in English English dictionary
A one-piece suit combining trousers and jacket, worn for heavy or hot manual labour
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. a piece of loose clothing like trousers and a shirt joined together, that you wear over your clothes to protect them when you are working overalls