locker

Short definition from Wiktionary

Noun

1. 1
   A type of storage compartment with a lock, usually used to store personal possessions for public use, such as in schools, railway stations, place of work, gyms, sports centers.
2. 2
   A lockable cubicle.
3. 3
   A storage compartment on a ship, not necessarily one that can be locked.
4. 4
   One who locks something.
5. 5
   A locking differential.
6. 6
   A customs officer who guards a warehouse.
7. 7
   A closet.

Proper noun

1. 1
   A surname.