piston
A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump)
Other meanings
A valve device in some brass instruments for changing the pitch
Synonyms
- plunger
Related words
- multipiston
- pistonless
- pistonlike
- pistonphone
- piston rod
- piston ring
- pistoning
- opposed piston opposed cylinder
- piston engine
- piston valve
- trunk piston
Where this comes from
This definition is adapted from “piston” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.