or idler pulley
a loose pulley made to press or rest on a belt in order to tighten or guide it.
Words nearby idle pulley
Origin of idle pulley
First recorded in 1885–1890
Also called idle wheel.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for idle pulley
a freely rotating trolley used to control the tension or direction of a beltAlso called: idler
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