Related Clues:
- Prison officer - salary
- Fixer needing driver
- Propeller - prison officer
- Fastener with slotted head
- It may have a slotted head
- One of the simple machines
- Tapered fastener with a slotted head
- Twist hands behind square
- Bad thing to have loose
- Propeller guard
- Thread holder?
- Word with "cork" or "thumb"
- Warden, e.g
- Archimedes' ___ (ancient water-transport machine)
- Item in the hardware department with a '+' or '-' on its head