A plunger is a common tool used to clear blockages in drains and pipes. It consists of a rubber suction cup attached to a wooden or plastic handle. The suction cup is pressed against the drain opening and is then forcefully pushed down and pulled up. This action creates a vacuum that can dislodge clogs and allow water to flow freely again.

To use a plunger:

Ensure there's enough water to cover the rubber part of the plunger.

Place the plunger over the drain to create a seal.

Push down and pull up forcefully several times to create suction.

Remove the plunger and check if the water drains.

If the blockage remains, repeat the process, or consider using other methods or tools to clear the blockage.