Definitions for "Change key"
Keywords:  alike, reset, cylinders, master, lock
A key adapted to open only one of a set of locks; -- distinguished from a master key.
n. 1. a key which operates only one cylinder or one group of keyed alike cylinders in a keying system, 2. any device that is used to mechanically or electronically allow resetting of certain key or combination locks, see also "reset key" #1 changeable bit key n. a key which can be recombinated by exchanging and/or rearranging portions of its bit or blade
See Servant Key.