Keyhole

Origin

key + hole

Noun

1. The hole in a lock where the key is inserted and turns.
2. (carpentry) A hole or excavation in beams intended to be joined together, to receive the key that fastens them.
3. (engineering) A mortise for a key or cotter.
4. (lasers)laser keyhole weldingkeyhole plasma

Derived terms

• keyhole surgery