bushing

Meanings

1. A type of plain bearing, a cylindrical lining designed to reduce friction and wear inside a hole, often used as a casing for a shaft, pin or hinge.
2. An elastic bearing used as a type of vibration isolator, commonly made of rubber. An interface between two parts, damping the movement and the energy transmitted.
3. A threaded bushing: a fastener element that is inserted into an object, usually to add a threaded hole in a softer or thin material.
4. A lining for an opening through which a conductor passes, providing insulation and mechanical protection for the conductor.
5. An adapter for joining pipes of different size.

1. present participle and gerund of bush

Etymology

From bush (“metal lining of the axle hole of a wheel or touch hole of a gun”) + -ing.