biːm ɹiː ʃɑːft ʃæft expose to radiation irradiate food cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins any of the stiff bony spines in the fin of a fish 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 emit as rays That tower rays a laser beam for miles across the sky the syllable naming the second (supertonic) note of any major scale in solmization a column of light (as from a beacon) a group of nearly parallel lines of electromagnetic radiation a branch of an umbel or an umbelliform inflorescence (mathematics) a straight line extending from a point