a gear having straight teeth cut on the rim parallel to the axis of rotation.
Origin of spur gear
First recorded in 1815–25
Also called spur wheel.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for spur gear
It will be seen that the sixteen cams are forged integrally with the shaft and that it is spur-gear driven.Aviation Engines|Victor Wilfred Pag
British Dictionary definitions for spur gear
a gear having involuted teeth either straight or helically cut on a cylindrical surface. Two such gears are used to transmit power between parallel shafts
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