Glossary

In a lock, a rotating piece attached to the end of the cylinder plug to engage the locking mechanism.

An ornament resembling the outer protective covering of a flower; found, for example, in the Corinthian capital.

Flint or pebble-stone; used in building walls, etc.

A dome, cupola, or structure of similar form, as a cup-shaped ceiling, the head of an alcove, etc.

A storage vessel, not open to the atmosphere, in which a supply of water is heated.