Answer: PRISM
The answer PRISM has 160 possible clues. See the results below.
Possible Clues:
- Telescope component
- Refraction device that makes a rainbow
- Triangular shape of glass or quartz, breaks up a beam
- Color refractor
- Piece of cut crystal, perhaps
- For a light turn-up for the knight with the Prime Minister around
- Triangular piece of glass, optical device
- Shape used to disperse light beams
- Solid figure - light separator
- Solid pair is married