Source : Webster's Revised Unabridged Dictionary (1913)

Illumine \Il*lu"mine\, v. t. [Cf. F. illuminer. See
   {Illuminate}.]
   To illuminate; to light up; to adorn.

Source : WordNet®

illumine
     v : make lighter or brighter; "This lamp lightens the room a
         bit" [syn: {light}, {illume}, {light up}, {illuminate}]