[ sprok-it ]
/ ˈsprɒk ɪt /


  1. Also called chainwheel, sprocket wheel.a toothed wheel engaging with a conveyor or power chain.
  2. one tooth of such a wheel.
Carpentry. a wedge-shaped piece of wood extending a sloping roof over the eaves with a flatter pitch.


Nearby words

  1. spritsail,
  2. spritz,
  3. spritzer,
  4. spritzig,
  5. sproat,
  6. sprocket hole,
  7. sprog,
  8. sprout,
  9. spruance,
  10. spruance, raymond ames

Origin of sprocket

First recorded in 1530–40; origin uncertain

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

Examples from the Web for sprocket

British Dictionary definitions for sprocket


/ (ˈsprɒkɪt) /


Also called: sprocket wheel a relatively thin wheel having teeth projecting radially from the rim, esp one that drives or is driven by a chain
an individual tooth on such a wheel
a cylindrical wheel with teeth on one or both rims for pulling film through a camera or projector
a small wedge-shaped piece of wood used to extend a roof over the eaves

Word Origin for sprocket

C16: of unknown origin

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

Word Origin and History for sprocket


1530s, originally a carpenters' word for a piece of timber used in framing, of unknown origin. The meaning "projection from the rim of a wheel that engages the links of a chain" is first recorded 1750.

Online Etymology Dictionary, © 2010 Douglas Harper