Plunger (noun)

1. A tool consisting of a handle and a rubber cup, used for clearing blockages from sinks, toilets, and other drains.
2. A device that forces a liquid or gas into a container or pipe by means of pressure.

Origin:

The term "plunger" is derived from the middle english word "plongeour" which means "diver".

Examples:

1. The plunger was used to clear the blockage in the sink.
2. He used the plunger to unclog the toilet.
3. The plunger is a tool for clearing blockages from drains.
4. The syringe has a plunger that pushes the liquid into the needle.
5. The oil well was drilled using a plunger that forced water into the well to force oil out.