ray (Noun) — A column of light (as from a beacon).
ray (Noun) — A branch of an umbel or an umbelliform inflorescence.
ray (Noun) — (mathematics) a straight line extending from a point.
ray (Noun) — A group of nearly parallel lines of electromagnetic radiation.
ray (Noun) — The syllable naming the second (supertonic) note of any major scale in solmization.
ray (Noun) — Any of the stiff bony spines in the fin of a fish.
ray (Noun) — Cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins.
ray (Verb) — Emit as rays. ex. "That tower rays a laser beam for miles across the sky"
ray (Verb) — Extend or spread outward from a centre or focus or inward towards a centre. ex. "spokes ray from the hub of the wheel"
ray (Verb) — Expose to radiation.