Yes, rays is a Scrabble word!

Verb

1. Emit as rays

2. Extend or spread outward from a center or focus or inward towards a center

3. Expose to radiation

Noun

1. A column of light (as from a beacon)

2. A branch of an umbel or an umbelliform inflorescence

3. (mathematics) a straight line extending from a point

4. A group of nearly parallel lines of electromagnetic radiation

5. The syllable naming the second (supertonic) note of any major scale in solmization

6. Any of the stiff bony spines in the fin of a fish

7. Cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins