idle gear
or idler gear
noun
a gear placed between a driving and a driven gear to transmit motion between them.
Words nearby idle gear
idioventricular, idioventricular rhythm, idk, idle, idle character, idle gear, idle pulley, idle time, idle wheel, idleness, idler
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019