plunger

plunger is defined in Webster's Unabridged Dictionary (1913) with 4 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.
  2. 2.One who bets heavily and recklessly on a race; a reckless speculator. [Cant]
  3. 3.(Pottery) A boiler in which clay is beaten by a wheel to a creamy consistence. Knight.
  4. 4.(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

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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Definition-first questions whose answer is plunger.

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