n. 射线；[俚]日光浴；光线（ray的复数）

n a column of light (as from a beacon)

n a branch of an umbel or an umbelliform inflorescence

n (mathematics) a straight line extending from a point

n a group of nearly parallel lines of electromagnetic radiation

n the syllable naming the second (supertonic) note of any major scale in solmization

n any of the stiff bony spines in the fin of a fish

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

v emit as rays

v extend or spread outward from a center or focus or inward towards a center

v expose to radiation