plunger

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plunger

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

Plunger

 

(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.

plunger

[′plən·jər]
(design engineering)
A wooden shaft with a large rubber suction cup at the end, used to clear plumbing traps and waste outlets.
(electromagnetism)
(engineering)
(mechanical engineering)
The long rod or piston of a reciprocating pump.

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.
References in periodicals archive ?
And will today's schoolchildren have nightmares about an overgrown pepper--pot with laryngitis, waving a sink plunger about?
At the BBC store alone we have everything from a Dalek, complete with sink plunger gun, to the Albert Square signs from EastEnders.
Now boasting pant power, he wears nothing but a red cape and huge white Y-fronts as he takes on the likes of Professor Poopy Pants and the Wicked Wedgie Woman with his trusty sink plunger in five tales of crude, rude mischief making that boys aged six to 10 can't get enough of.
Alessi has also just launched Alessi UK, and brilliant new designs include the quirky Mr Cold liquid soap dispenser - a duck with a cold who drips soap from his nose - and Johnny the Diver sink plunger.
Working together on ideas for a film where robots ruled the Earth, his favourite idea included a cone covered in ping-pong balls and sink plunger.
His dad may have lips like a sink plunger and more hair than the average shaggy terrier, but little Lucas is pink, plump and, well, baby-faced.
And on a pitch so heavy that long clearances plugged in the mud like a sink plunger, the Blues had to resort to the English virtues of spit and sawdust football ahead of continental sophistication.
No deadly ray gun, just two holes punched through the plastic, allowing you to hold an egg whisk ("gun") or a sink plunger ("sucker") in your hand.
His mace is a tartan-covered sink plunger and his Braveheart-painted face scares babies out of their prams.
In early shows the front of the gun was a rubber sink plunger.
Paul laughed: "A lot of the people who wrote in to the American company actually complained that the Doctor wasn't being attacked with a barely- disguised sink plunger or egg whisk.