Locksmith Terms and Definitions

cylinder lock: n. any lock that is operated by a cylinder key

housing: n. that part of a locking device which is designed to hold a core

key-in-knob cylinder: n. a cylinder used in a key-in-knob lockset

lock: n. any device which prevents access or use by requiring special knowledge or equipment

shutter: n. 1. a spring-loaded device which closes upon the removal of a cylinder tailpiece, protecting a locking device from being manipulated, 2. a spring-loaded device which covers a cylinder keyway when the key is not in it