# bushing

Pronunciation: say "BUUSH-ing" /ˈbʊʃ.ɪŋ/

## Noun

1. A cylindrical lining fitted inside a hole to reduce friction and wear, often serving as a casing for a shaft, pin, or hinge.
   - Simple: A small tube that lines a hole to cut down on rubbing and wear, often holding a shaft or pin.
   - _Engineers specified a bronze bushing to support the rotating shaft._
   - _Over time the worn bushings allowed the pin to rattle in its housing._
2. An elastic bearing, commonly made of rubber, that sits between two parts as a vibration isolator, damping movement and the energy transmitted across them.
   - Simple: A soft rubber part placed between two pieces to soak up shaking and reduce the energy passed along.
   - _Mechanics replaced the worn bushing to quiet the rattling control arm._
   - _Rubber bushings in the engine mounts keep vibration from reaching the cabin._
3. A pipe fitting that adapts between pipes or threads of different sizes, letting a smaller line join a larger one.
   - Simple: A pipe fitting that connects two pipes of different sizes so they fit together.
   - _Installers threaded a reducing bushing into the tee to accept the smaller branch line._
   - _He kept a few brass bushings on hand for joining mismatched pipe diameters._
4. A fastener element inserted into an object, usually to add a threaded hole in a softer or thinner material than would otherwise hold a screw.
   - Simple: A small threaded insert added to soft or thin material to give it a strong screw hole.
   - _A brass bushing molded into the housing provides durable threads for repeated assembly._
   - _Engineers added threaded bushings to the aluminum panel to keep the screws from stripping._
5. An insulating sleeve fitted into an opening through which an electrical conductor passes, protecting it both electrically and from mechanical damage.
   - Simple: A lined opening that lets an electric wire pass through safely, giving it insulation and protection.
   - _The transformer's bushing insulates the high-voltage conductor where it exits the tank._
   - _Failed bushings are a common cause of flashovers on aging transformers._

## Verb

6. Present participle of bush. — present participle and gerund of bush
   - Simple: Present participle of bush. Use this form for the action happening right now.
   - _The machine shop is bushing the connecting rods to bring them back to size._
   - _Workers were bushing the joints all afternoon to reduce play in the linkage._

## Origin

Formed from bush (meaning the metal lining of the axle hole of a wheel or the touch hole of a gun) combined with the suffix -ing.

Source: DictionaryAI, https://dictionaryai.com/define/bushing (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).