Source : WordNet®

halo
     n 1: an indication of radiant light drawn around the head of a
          saint [syn: {aura}, {aureole}, {nimbus}, {glory}, {gloriole}]
     2: a toroidal shape; "a ring of ships in the harbor"; "a halo
        of smoke" [syn: {ring}, {annulus}, {anulus}, {doughnut}, {anchor
        ring}]
     3: a circle of light around the sun or moon
     [also: {haloes} (pl)]

haloes
     See {halo}