Related Clues:
- Gun-cleaning aid
- Retina cell
- Bar tenders?
- See 89-Across
- Optical sensor
- Often-joked-about professionals
- Prevent, with 'off'
- Axle, for one
- Barrel component
- Mace
- Gross spam euphemism
- Divining or dowsing instrument
- With 73-Down, two-time winner of tennis's Grand Slam
- Window treatment support
- Serling of "The Twilight Zone"