- a lining for a hole, intended to insulate and protect from abrasion one or more conductors that pass through it.
- Machinery.
- a replaceable thin tube or sleeve, usually of bronze, mounted in a case or housing as a bearing.
- a replaceable hardened steel tube used as a guide for various tools or parts, as a drill or valve rod.
- another word for bush 2 (def. 1)
- an adaptor having ends of unequal diameters, often with internal screw threads, used to connect pipes of different sizes
- a layer of electrical insulation enabling a live conductor to pass through an earthed wall, etc
