1. (noun) beam, beam of light, light beam, ray, ray of light, shaft, shaft of light, irradiation
a column of light (as from a beacon)
2. (noun) ray
a branch of an umbel or an umbelliform inflorescence
3. (noun) ray
(mathematics) a straight line extending from a point
4. (noun) beam, ray, electron beam
a group of nearly parallel lines of electromagnetic radiation
5. (noun) re, ray
the syllable naming the second (supertonic) note of any major scale in solmization
6. (noun) ray
any of the stiff bony spines in the fin of a fish
7. (verb) ray
cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
8. (verb) ray
emit as rays
"That tower rays a laser beam for miles across the sky"
9. (verb) radiate, ray
extend or spread outward from a center or focus or inward towards a center
"spokes radiate from the hub of the wheel"; "This plants radiate spines in all directions"
10. (verb) irradiate, ray
expose to radiation
"irradiate food"
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Definition of 'RAY' 
