Locker \Lock"er\, n.

1. One who, or that which, locks.

2. A drawer, cupboard, compartment, or chest, esp. one in a ship, that may be closed with a lock.

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.

Source: Webster's Revised Unabridged Dictionary (1913)