Piston
01
kolv, piston
a solid, round part that moves back and forth inside a hollow tube in an engine or machine, helping to push or pull gases or liquids, or to turn pressure into movement
Exempel
The piston moves up and down inside the engine.
Kolven rör sig upp och ner i motorn.
Steam pushes the piston to power the machine.
Ångan driver kolven för att driva maskinen.
