Share this entry

Share this page

pulley

Syllabification: pul·ley
Pronunciation: /ˈpo͝olē
 
/

Definition of pulley in English:

noun (plural pulleys)

(also pulley wheel)
1A wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights. Compare with block (sense 7) of the noun).
Example sentences
  • Prior to World War II, the sash (the parts that move) was counterweighted by a temperamental arrangement of cords, pulleys and iron weights.
  • It turned out to be a spare pulley used for lifting heavy equipment.
  • We come across bright ideas in books, like over-length lines passed through pulleys under floats and the excess taken up by counter-balancing weights.
1.1(On a bicycle) a wheel with a toothed rim around which the chain passes.
Example sentences
  • The upper pulley wheel is such a cool thing for rearward arc travel bikes.
  • The lower pulley wheel has no play and should be installed with the lettering facing away from your bicycle's frame.
1.2A wheel or drum fixed on a shaft and turned by a belt, used especially to increase speed or power.
Example sentences
  • Standard belt lengths between pulleys: 132 to 500 mm; widths between 10 and 200 mm.
  • There are V-belt constructions made up of sections that lock together, allowing you to wrap the belt around a trapped pulley and join the two ends.
  • Something else you don't do - you don't clear sap buildup from between a pulley and belt when the conveyor is running.

verb (pulleys, pulleying, pulleyed)

[with object] Back to top  
Hoist with a pulley.
Example sentences
  • It's like being on a boat, sleeping on the bus, waking, buying a lift ticket, being pulleyed up the mountain, the payoff, the floating dance of linked telemark turns.
  • It was being pulleyed by several cords of thick rope overhead.

Origin

Middle English: from Old French polie, probably from a medieval Greek diminutive of polos 'pivot, axis'.

Definition of pulley in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day ingratiate
Pronunciation: ɪnˈɡreɪʃɪeɪt
verb
bring oneself into favour with someone through flattery…