illuminate in WordNet English dictionary

1. make free from confusion or ambiguity; make clear
   "Could you clarify these remarks?"; "Clear up the question of who is at fault"
   clear  clear up  shed light on  crystallize  crystallise  crystalize  crystalise  straighten out  sort out  enlighten  illuminate  elucidate 
   
2. make lighter or brighter
   "This lamp lightens the room a bit"
   light  illume  illumine  light up  illuminate 
   
3. add embellishments and paintings to (medieval manuscripts)
   illuminate