E

ejector hole
n. a hole found on the bottom of certain interchangeable cores under each pin chamber. It provides a path for the ejector pin.

ejector pin
n. a tool used to drive all the elements of a pin chamber out of certain interchangeable cores

emergency key
n. the key which operates a privacy function lockset

emergency master key
n. a special master key which usually operates all guest room locks in a hotel master key system at all times, even in the shut out mode. This key may also act as a shut out key.

EMK
abb. emergency master key

ENG
symbol for engineer`s key

engineer`s key
n. a selective master key which is used by maintenance personnel to operate many locks under different master keys in a system of three or more levels of keying