Bushing
WordNet
noun
(1) A cylindrical metal lining used to reduce friction
(2) An insulating liner in an opening through which conductors pass
WiktionaryText
Noun
- A type of bearing, a cylindrical lining designed to reduce friction and wear inside a hole, often used as a casing for a shaft, pin or hinge.
- A lining for an opening through which a conductor passes, providing insulation and mechanical protection for the conductor.
- An adapter for joining pipes of different size.