n. a branch of an umbel or an umbelliform inflorescence
n. (mathematics) a straight line extending from a point
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
n. 光线, 射线, 闪烁, 光辉
vi. 射出光线, 浮现, 放射光线
vt. 放射, 显出