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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 plung·er /ˈplʌnʤɚ/
 跳進的人,潛水者,衝入物,活塞

From: Webster's Revised Unabridged Dictionary (1913)

 Plun·ger n.
 1. One who, or that which, plunges; a diver.
 2. A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.
 3. One who bets heavily and recklessly on a race; a reckless speculator. [Cant]
 4. Pottery A boiler in which clay is beaten by a wheel to a creamy consistence.
 5. Gun. The firing pin of a breechloader.
 Plunger bucket, a piston, without a valve, in a pump.
 Plunger pole, the pump rod of a pumping engine.
 Plunger pump, a pump, as for water, having a plunger, instead of a piston, to act upon the water. It may be single-acting or double-acting
 

From: WordNet (r) 2.0

 plunger
      n 1: someone who risks losses for the possibility of considerable
           gains [syn: speculator]
      2: someone who dives (into water) [syn: diver]
      3: hand tool consisting of a stick with a rubber suction cup at
         one end; used to clean clogged drains [syn: plumber's
         helper]
      4: mechanical device that has a plunging or thrusting motion
         [syn: piston]