n. a surface mounted deadbolt designed to be moved by hand via a 90º bend in the bolt that serves as a handle cap 1. n. a spring cover for a single pin chamber 2. n. a part which may serve as a plug retainer and/or a holder for the tailpiece 3. v. to install a cap capping block n. a holding fixture for certain interchangeable cores which aids in the installation of the caps

(n.) A surface mounted deadbolt designed to be moved by hand via a 90º bend in the bolt that serves as a handle. Source: Lock Industry Standards and Training (LIST) Council

A heavy cane-shaped bolt with the top bent at right angles; used on the bottom of doors.