Pronunciation: (lok'ur),[key] —n. 1. a chest, drawer, compartment, closet, or the like, that may be locked, esp. one at a gymnasium, school, etc. for storage and safekeeping of clothing and valuables.
2. Naut.a chest or compartment in which to stow things.
3. a refrigerated compartment, as in a locker plant, that may be rented for storing frozen foods.
4. a person or thing that locks.