- a small cramp iron.
- a clasp, often richly ornamented, for clothing or armor.
- a device, as a hook, for preventing vibration in the section of a piano string between the pin and the bridge.
- (in classical architecture) a sculptural relief on the face of a keystone.
- a fastening consisting of a loop and hook, formerly used in armour and clothing
- a metal cramp used to connect stones