A room attached to an athletic, recreational, or workplace facility, filled with lockers for storage of clothing and equipment; clothes are generally changed there
We changed into our swimsuits in the locker room next to the pool.
Characteristic of conversations held in locker rooms; that is, either very informal, boastful, juvenile, or explicitly sexual
The others tired of Frank's habitual locker-room boasting about various women he had scored with.
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
A locker room is a room in which there are a lot of lockers. A room furnished with lockers, as in a gymnasium, school, or workplace, used as a place in which to change clothes and store equipment. a room in a sports building, school etc where people change their clothes and leave them in lockers