(n)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
n. 1. One who, or that which, locks. [ 1913 Webster ]
2. A drawer, cupboard, compartment, or chest, esp. one in a ship, that may be closed with a lock. [ 1913 Webster ]
Chain locker (Naut.), a compartment in the hold of a vessel, for holding the chain cables. -- Davy Jones's locker, or Davy's locker. See Davy Jones. -- Shot locker, a compartment where shot are deposited. Totten. [ 1913 Webster ]