bushing

bush·ing  (bshng)

n.

1. A fixed or removable cylindrical metal lining used to constrain, guide, or reduce friction.

2. Electricity An insulating lining for an aperture through which a conductor passes.

3. An adapter threaded to permit joining of pipes with different diameters.

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[From bush.]

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bushing [ˈbʊʃɪŋ]

n

1. (Engineering / Mechanical Engineering) another word for bush² [1]

2. (Engineering / Mechanical Engineering) an adaptor having ends of unequal diameters, often with internal screw threads, used to connect pipes of different sizes

3. (Engineering / Electrical Engineering) a layer of electrical insulation enabling a live conductor to pass through an earthed wall, etc.

Thesaurus

Noun	1.	bushing - an insulating liner in an opening through which conductors pass dielectric, insulator, nonconductor - a material such as glass or porcelain with negligible electrical or thermal conductivity
	2.	bushing - a cylindrical metal lining used to reduce friction cylindrical lining lining, liner - a protective covering that protects an inside surface