drop ornament
A tear-shaped pendant, or a representation thereof.
Glossary
drop-in beam
A simple beam, usually supported by cantilever arms, with joints so placed that it can be installed by lowering it
Glossary
drop-head window
A double-hung window whose lower sash can drop through the window sill into a pocket below the sill.
Glossary
drop hammer
A heavy weight for driving a pile into the ground; dropped by gravity along a set of guide rails onto