a ring of light that seems to encircle the sun, moon, or other luminous body: it results from the refraction of light through ice crystals in our atmosphere
a spherical distribution of stars and star clusters extending beyond the main body of certain galaxies, as the Milky Way
a symbolic disk or ring of light shown around or above the head of a saint, etc., as in pictures; nimbus: often used as a symbol of virtue or innocence
the splendor or glory with which a famed, revered, or idealized person or thing is invested