Coveralls are a single piece of clothing that combines pants and a jacket. You wear coveralls over your clothes in order to protect them while you are working.
[US]regional note: in BRIT, use overalls
...a man in white coveralls.
coveralls in British English
(ˈkʌvərɔːlz) or coverall
plural noun
protective outer garments for the body
Examples of 'coveralls' in a sentence
coveralls
It seemed important to ask, in this world of masks and coveralls, where he had never seen people touch one another.
Amanda Hemingway THE GREENSTONE GRAIL: THE SANGREAL TRILOGY ONE (2004)
He wore work boots and grey-and-white striped coveralls over a bulky grey sweater.