A plunger is a device that is used to release stoppages in plumbing.
Plunger may also refer to:
Science and technology Plunger or blasting machine, used to detonate explosives Plunger (hydraulics), a cylindrical piston-like component whose length is larger than its diameter Plunger, a component of a syringe (though in modern syringes, it is actually a piston) Plunger pump, type of positive displacement pump with stationary seal and a smooth cylindrical plunger, suitable for higher pressures Plunger suspension, used on motorcycles before and immediately after World War II Plunger brake or spoon brake, probably the first type of bicycle brake Plunger lift, a natural gas well deliquification techniques Plunger mute, the rubber part of a plumbing plunger, or a similar device, used as a musical mute Spring plunger, spring-loaded device for indexing, locating, positioning or locking components against a tip, pin, or ball using spring force Plunger (pinball), a spring-loaded rod used to launch balls in pinball
Military USS Plunger, four United States Navy submarines Plunger-class submarine, an early class of United States Navy submarines The Plungers, an obsolete nickname for the Household Cavalry
Popular culture The Plunger, a 1920 American film
See also French press or coffee plunger, a simple coffee brewing device Plunge (disambiguation)