changing room
nounUK /ˈtʃeɪn.dʒɪŋ ˌruːm/
US /ˈtʃeɪn.dʒɪŋ ˌruːm/
A small room where you take off your clothes and put on other clothes.
She went into the changing room to try on the new dress.
OTHER MEANINGS
2. A room at a pool or beach where people change into swimsuits.
The kids left their towels in the changing room by the pool.
3. A room in a gym or sports club where players change before a game.
The team met in the changing room before the match.
4. A small private area in a shop for trying on clothes.
There was a long line for the changing room at the store.