Noun

1. Relative darkness caused by light rays being intercepted by an opaque body
2. A quality of a given color that differs slightly from another color
3. Protective covering that protects something from direct sunlight
4. A subtle difference in meaning or opinion or attitude
5. A position of relative inferiority
6. A slight amount or degree of difference
7. A mental representation of some haunting experience
8. A representation of the effect of shadows in a picture or drawing (as by shading or darker pigment)

Verb

1. Cast a shadow over
2. Represent the effect of shade or shadow on
3. Protect from light, heat, or view
4. Vary slightly
5. Pass from one quality such as color to another by a slight degree