GNU Collaborative International Dictionary of English

Found one definition

1.       
   Luminary , n.; pl. Luminaries , [F. luminaire, L. luminare a light or lamp, which was lighted in the churches, a luminary, fr. lumen, luminis, light, fr. lucere to be light, to shine, lux, lucis, light. See Light.]
   1913 Webster
   Any body that gives light, especially one of the heavenly bodies. “ Radiant luminary.”
   Skelton.
   
   1913 Webster
   Where the great luminary . . . 
   Dispenses light from far.
   Milton.
   
   1913 Webster
   One who illustrates any subject, or enlightens mankind; as, Newton was a distinguished luminary.
   1913 Webster