|
|
 |
|
|
|
|
| pis·ton [ pístən ] (plural pis·tons) |
noun |
|
| Definition: |
| |
1. metal cylinder sliding within tube: a metal cylinder that slides up and down inside a tubular housing, receiving pressure from or exerting pressure on a fluid, especially one of several in an internal-combustion engine
|
2. valve in brass instrument: the valve mechanism in a brass musical instrument that is used to alter its pitch
|
| [Early 18th century. Via French< Italian pestone "large pestle" < pestare (see pesto)] |
|
|
|