"a branch of an umbel or an umbelliform inflorescence"
"a group of nearly parallel lines of electromagnetic radiation"
"any of the stiff bony spines in the fin of a fish"
"cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins"
"emit as rays"
"extend or spread outward from a center or focus or inward towards a center"