bushing

Noun
  1. An insulating liner in an opening through which conductors pass (synset 102928634)
    is a type of: dielectric, insulator, nonconductor - a material such as glass or porcelain with negligible electrical or thermal conductivity
  2. A cylindrical metal lining used to reduce friction (synset 102928491)
    is a type of: liner, lining - a protective covering that protects an inside surface
    same as: cylindrical lining

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