boilersuit
nounUK /ˈbɔɪləsuːt/
US /ˈbɔɪlərˌsuːt/
A boilersuit is a one-piece suit you wear over your clothes to keep them clean.
He put on a boilersuit before fixing the car.
OTHER MEANINGS
2. A loose one-piece garment worn by mechanics and factory workers.
The mechanic wore a blue boilersuit covered in grease.
3. A protective suit worn to keep clothes clean during messy jobs.
She zipped up her boilersuit before painting the wall.
4. A fashion item styled like a work suit, worn casually.
He paired his boilersuit with sneakers for a casual look.