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1. a rubber suction cup fixed to the end of a rod, used to clear blocked drains
2. a device or part of a machine that has a plunging or thrusting motion; piston
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(also ram), a piston that has a smooth generatrix (generating surface) or annular grooves and is substantially longer than it is wide. Plungers are chiefly used in hydraulic machines, where they serve as components of pumps, of hydraulic presses and lifts, of slide valves in hydraulic drives, and of multistage gas compressors.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


(design engineering)
A wooden shaft with a large rubber suction cup at the end, used to clear plumbing traps and waste outlets.
(mechanical engineering)
The long rod or piston of a reciprocating pump.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

plumber’s friend, force cup, plumber’s helper, plunger

A tool consisting of a rubber suction cup attached to a handle; set over a plumbing trap (or the like) and worked with a pumping action to clear the trap of minor obstructions.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Now, he has a lot of time to learn how to use those 12-gauge Magnum toilet plungers at the state's guest house.
The second outpost of the popular Hamburg hostel Superbude expands on the unconventional design of the original, where wheelbarrows are turned upright into chairs, beer crates are converted into stools, and toilet plungers serve as coat racks.
A dark comedy set around Barry Egan, the socially impaired owner of a small business distributing novelty toilet plungers in the San Fernando Valley.
One of the tales of terror he used to persuade pensioners to buy an alarm was that thieves could use toilet plungers to remove glazing and come "through the window".
The hilarious logbook entries are particularly gripping and will have readers perched at the edges of their seats with their toilet plungers in hand.
Friday night is the annual Mercantile International Polka Parade, featuring such perennial favorites as the Precision Lawnmower Drill Team and the Twirling Babushka Brigade, whose talented members use toilet plungers as batons.
Kurka's opera, like the original novel, is a darkly satiric, anti-war, anti-bureaucracy diatribe, and director Rhoda Levine's concept highlighted this aspect through the clever imaging of John Conklin's chaotic set and costumes, which heightened the Jolly of humankind--using, for example, garbage cans with toilet plungers on top for the German spiked helmets.
They sell everything you can possibly think of - from clocks to umbrellas, wind chimes, pots, pans, Christmas trees, DIY essentials, tools, door stops, steam mops, shopping trolleys, showers, camping gear, padlocks, fly swatters, toilet plungers, electric heaters, shavers and coffee machines, cleaning products, curtain rings, logs, candles, cards and even heated blankets.
Bizarre Instagram trend sees users post the same photo every day - including eggs, Crocs and even toilet plungers
For example, DeShong stores handles for toilet plungers in one of the drawers, stacking only the rubber plunger on the shelf.
What's the point of being an army of power-hungry nutters, attempting world domination, when you're armed to the hilt with toilet plungers?!