wormwheel 
noun
The wheel of a worm gear.For example, the wormwheel may be formed from sintered iron whilst the worm is made of carbon steel....
- The 120-tooth wormwheel drives the first gear of the bevel gear cluster via the shaft to which both are affixed.
- The Wire drive unit is of proven design utilising intermeshed steel wormshaft and bronze wormwheels.
- bite one's lip
- bite one's nails
- bite one's tongue
- bite (or snap) someone's head off
- biter
- biternate
- bit error rate
- bite-size
- bite-sized
- bite someone's head off
- bite something back
- bite the big one
- bite the bullet
- bite the dust
- bite the hand that feeds one
- bitewing
- Bithynia
- biting
- bitingly
- biting midge
- bitmap
- BITNET
- bit of fluff (or skirt or stuff)
- bit of rough
- bitonal