D defs.my
Entry 2 senses Webster, 1913

Luminary

/lo͞om'-ən-ĕrˌ-ē/ · Lu·mi·na·ry · IPA /ˈluməˌnɛɹi/
01 n. Any body that gives light, especially one of the heavenly bodies.
  1. 1.
    Any body that gives light, especially one of the heavenly bodies.
    “Where the great luminary . . . Dispenses light from far.” Milton.
  2. 2.
    One who illustrates any subject, or enlightens mankind; as, Newton was a distinguished luminary.