נָהַר nâhar (H5102)

to sparkle, i.e. (figuratively) be cheerful; hence (from the sheen of a running stream) to flow, i.e. (figuratively) assemble

1) to shine, beam, light, burn 1a) (Qal) to beam, be radiant 2) to flow, stream 2a) (Qal) to flow, stream

a primitive root;