wormgear
/ˈwɜrmˌɡɪr/
noun
- A mechanical device consisting of a screw-like gear (the worm) that meshes with a toothed wheel (the worm wheel), used to transmit motion between non-intersecting shafts at a right angle.
- The steering system in many cars uses a wormgear for smooth turning.
- A wormgear can provide a high reduction ratio in a compact space.
- The factory replaced the old wormgear to reduce noise in the conveyor belt.