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plunger

[pluhn-jer] /ˈplʌn dʒər/
noun
1.
Machinery. a pistonlike reciprocating part moving within the cylinder of a pump or hydraulic device.
2.
Automotive. a pistonlike part in the valve of a pneumatic tire.
3.
Also called force cup, plumber's friend, plumber's helper. a device consisting of a handle with a rubber suction cup at one end, used as a force pump to free clogged drains and toilet traps.
4.
a person or thing that plunges.
5.
a reckless bettor or speculator.
Origin
1605-1615
1605-15; plunge + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for plunger
  • Nor, once the crisis struck, was he the only central banker to prove handy with monetary plunger and wrench.
  • First, a plunger is pulled and rotated to release the drive and allow it to slide out of the server's case.
  • So get the old rubber plunger to clear the blockage.
  • He even resorts to a toilet plunger on his mouth to clean him self up.
  • It's two plastic tubes, and one of them has a plunger.
  • Press the plunger and the monster's jaws spring open, ejecting a diseased-looking sour-candy tongue.
  • She insisted that she never pulled the sink plunger up and only used one sink and never filled it.
  • The plunger ball should be replaced by a plunger ball and the flapper should be replaced with a flapper.
  • The plunger is inserted into the cylinder and the head is installed around the plunger at the top of the cylinder.
  • The plunger moves the fluid from the bottom of the pump to the top of the pump.
British Dictionary definitions for plunger

plunger

/ˈplʌndʒə/
noun
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
3.
(informal) a reckless gambler
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for plunger
n.

1610s, "one who plunges," agent noun from plunge (v.). As a mechanism, 1777.

Online Etymology Dictionary, © 2010 Douglas Harper
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10
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