jackshaft

[ jak-shaft, -shahft ]
/ ˈdʒækˌʃæft, -ˌʃɑft /
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noun Machinery.

Also called countershaft. a short shaft, connected by belting, gears, etc., that transmits motion from a motor or engine to a machine or machines being driven (distinguished from main shaft).
a shaft on which an idle wheel or fairlead turns.

Nearby words

  1. jacklin,
  2. jackpot,
  3. jackrabbit,
  4. jacks,
  5. jackscrew,
  6. jacksie,
  7. jacksmelt,
  8. jacksnipe,
  9. jackson,
  10. jackson day

Origin of jackshaft

First recorded in 1895–1900; jack1 + shaft

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

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British Dictionary definitions for jackshaft

jackshaft

/ (ˈdʒækˌʃɑːft) /

noun

a short length of shafting that transmits power from an engine or motor to a machine
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