locker room

a room (as at an athletic facility or workplace) where you can change clothes and which contains lockers for the temporary storage of your clothing and personal possessions

• room — an area within a building enclosed by walls and floor and ceiling

• cabinet, locker, storage locker — a storage compartment for clothes and valuables; usually it has a lock

• athletic facility — a facility for athletic events
• workplace, work — a place where work is done