Related Clues:
- Optical device used to deviate a beam
- Figure purse contains shilling
- Light-reflecting gem
- It reflects a guiding principle in road design
- Solid that, when divided into three parts, describes this puzzle's theme
- Reflecting device in a road surface
- Object depicted on the cover of Pink Floyd's 'The Dark Side of the Moon'
- Female character in The Importance of Being Ernest — optical device
- Reflector in the road
- "Dark Side of the Moon" cover has one
- Light-bending glass
- Light-refracting device
- One of those in the middle of the road
- Po-faced about school figure mixing up colours
- Cover image on Pink Floyd's 'The Dark Side of the Moon'