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Definitions by Wordnik

  1. (noun) A solid cylinder or disk that fits snugly into a larger cylinder and moves under fluid pressure, as in a reciprocating engine, or displaces or compresses fluids, as in pumps and compressors.
  2. (noun) Music A valve mechanism in brass instruments for altering the pitch.

Examples by Wordnik

  1. But Black has size on his side and keeps forcing him against the ropes, getting in short piston blows into his ribs, which seem to move with a life of their own after the first blow. - Joshua Samuel Brown
  2. (enquiry) bears upon the face of it the stopping (istanai) of the stream; and the word piston (faithful) certainly indicates cessation of motion; then, again, mneme (memory), as any one may see, expresses rest in the soul, and not motion. - Cratylus
  3. The type IV secretory system is an elaboration of the type II, except now the piston is a long filament, and that filament can stick to surfaces. - The Politically Incorrect Guide to Darwinism and Intelligent Design Review: IC is not nice (Chapter 10) - The Panda's Thumb
  4. One part of the piston is a centrifugal piston which functions as a striking piston, whereas the other part is used for the transmission of drilling rods and compression air in order to blow clean the drilling hole. - 7.1 Pneumatic jack hammer, drilling stand, jackleg
  5. As, however, the piston is the only movable part, the force of the steam is directed to that part, and the motion is then transmitted to the crank, and to the shaft of the engine. - Practical Mechanics for Boys


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