definition
The hole in a lock where the key is inserted and turns.
definition
Any small opening resembling the hole for a key in shape or function.
definition
A circle cut out of a garment as a decorative effect, typically at the front or back neckline of a dress.
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A hole or excavation in beams intended to be joined together, to receive the key that fastens them.
definition
A mortise for a key or cotter.
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(lasers) A transient column of vapor or plasma formed when using high energy beams, such as lasers, for welding or cutting.
example
keyhole plasma
definition
A welding method in which a hole forms in the surface immediately ahead of the puddle in the direction of welding. The hole is filled as the weld progresses.
definition
The free-throw lane together with the circle surrounding the free-throw line; key.
definition
A gravitational keyhole.