A plunger is a simple tool used to clear clogs in drains and toilets. It consists of a rubber suction cup attached to a long handle. When pressed down and pulled up, the suction cup creates a vacuum that helps dislodge blockages, allowing water to flow freely again. There are different types of plungers, including the standard cup plunger and the flange plunger, which is designed specifically for toilets. Using a plunger is often the first step in addressing plumbing issues before calling a professional plumber or using chemical drain cleaners.