wrist pin


noun Machinery.

a pin joining the end of a connecting rod to a trunk piston or the end of a piston rod.

Nearby words

  1. wrinkle,
  2. wrinklies,
  3. wrinkly,
  4. wrist,
  5. wrist joint,
  6. wrist plate,
  7. wrist shot,
  8. wrist sign,
  9. wrist watch,
  10. wrist wrestling

Origin of wrist pin

First recorded in 1870–75

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for wrist pin

  • This test may be made with the wrist-pin alone, or if the piston is in place, a straight edge or spirit level may be employed.

    Aviation Engines|Victor Wilfred Pag
  • The wear at the wrist-pin is taken by the so called brasses, shown at B in the illustrations.

    Steam Engines|Anonymous
  • The outer brass is adjustable, being forced toward the wrist-pin by a sliding wedge which is operated by one or more set-screws.

    Steam Engines|Anonymous

British Dictionary definitions for wrist pin

wrist pin


a cylindrical boss or pin attached to the side of a wheel parallel with the axis, esp one forming a bearing for a crank
US and Canadian the pin through the skirt of a piston in an internal-combustion engine, to which the little end of the connecting rod is attachedAlso called (esp in Britain): gudgeon pin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012