Related Clues:
- One of five on an 18-wheeler
- Greased part of a car
- Greased auto part
- Shopping cart part
- One of five on a big rig
- Shaft beneath the floorboard
- Bobbin, e.g
- Shaft with bushings
- Place for a cotter pin
- A centre of revolution
- Greased part of an auto
- 'Round-on-way' line
- What car wheels turn on
- Drive shaft component
- Rod with a linchpin