Definition of pulley | Bee Dictionary of English

n a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope

They devised a pulley system that warped the shape of the wings in midflight to turn the plane and to stop it from rolling laterally in air.
When Pete reaches the top, he ties a large pulley to a tree, loops the rope through it and onto a stamping, snorting yak.
PRODUCT Exercise machine with pulleys and weights that strengthen and increase flexibility through fluid, dancelike moves HOW IT STARTED Looking to build a machine to perfect.

Friction Facts: Bigger pulleys really are more efficient
Pro road racers who use Berner's uniquely oversized rear derailleur cages have sworn time and again that they reduce drivetrain friction thanks to their humongous 15-tooth pulleys. Now, Jason Smith of Boulder-based lab Friction Facts has confirmed that claim with his own independent testing. Berner-equipped racers such as Fabian Cancellara , Edvald Boasson Hagen , Philippe Gilbert and others ...
June 12, 2013 - BikeRadar
2 teens charged in Jan. 27 murder arraigned in court
Columbus police may have solved another of the city's murders from earlier this year. Bennie Pulley, Jr. was found shot to death inside his Lanier Drive home in the Benning Hills area on January 27.
June 11, 2013 - WTVM 9 Columbus
Princeton professor Dan Trueman performs a 'wordless musical epic' with So Percussion
'neither Anvil nor Pulley' will be performed at the Metropolitan Museum of Art on Saturday
June 7, 2013 - The Star-Ledger

Dale Earnhardt Jr in SI.com
I was running fifth. I thought that was pretty good,said Earnhardt, who led 33 laps early in the race. "We broke the pulley on the front end of the motor. You have bad luck every once in a while."
Rich Brooks in Louisville Courier-Journal
Obviously Mike Hartline goes into fall camp now with a lead over Curtis Pulley, but that decision on who will start will be (made) on the field, not off the field,Brooks said yesterday during a news conference at Fasig-Tipton, the...
JR Simplot in Twin Falls Times-News
I was never in a doctor's office till I cut that finger off,Simplot said. "I got it in a pulley, and they loaded me in the wagon. It took us eight hours to get to town. It was dark, and I can remember going up the stairs. I remember the...