orb /ɔːb $ ɔːrb/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Latin ; Origin: orbis 'wheel, circle' ]
1 . literary a bright ball-shaped object, especially the sun or the moon:
the red orb of the sun
2 . a ball decorated with gold, carried by a king or queen on formal occasions as a sign of power