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

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 Pup·pet n.  [Written also poppet.]
 1. A small image in the human form; a doll.
 2. A similar figure moved by the hand or by a wire in a mock drama; a marionette; a wooden actor in a play.
 At the pipes of some carved organ move,
 The gilded puppets dance.   --Pope.
 3. One controlled in his action by the will of another; a tool; -- so used in contempt.
 4. Mach. The upright support for the bearing of the spindle in a lathe.
 Puppet master. Same as Puppetman.
 Puppet play, a puppet show.
 Puppet player, one who manages the motions of puppets.
 Puppet show, a mock drama performed by puppets moved by wires.
 Puppet valve, a valve in the form of a circular disk, which covers a hole in its seat, and opens by moving bodily away from the seat while remaining parallel with it, -- used in steam engines, pumps, safety valves, etc.  Its edge is often beveled, and fits in a conical recess in the seat when the valve is closed. See the valves shown in Illusts. of Plunger pump, and Safety valve, under Plunger, and Safety.

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 Force pump Mach. (a) A pump having a solid piston, or plunger, for drawing and forcing a liquid, as water, through the valves; in distinction from a pump having a bucket, or valved piston. (b) A pump adapted for delivering water at a considerable height above the pump, or under a considerable pressure; in distinction from one which lifts the water only to the top of the pump or delivers it through a spout. See Illust. of Plunger pump, under Plunger.

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