plunger
Pronunciation:
/ˈplʌndʒɚ/noun
Definitions
A device that is used to remove blockages from the drain of a basin or tub, by suction.
The internal piece of a syringe that pushes out or pulls in any contents.
The sliding activator of an exploder, an electrical generator used to trigger electrical detonators such as blasting caps.
The part of a cafetière that is pushed down to remove grounds from coffee.