Illuminates (7)
'illuminates' is the definition.
('light' can be a synonym of 'illuminate')
This is all the clue.
(Other definitions for lights that I've seen before include "Understanding" , "with something for the cat" , "Sources of illumination" , "Fairy _;" , "See 2" .)
(Other definitions for edifies that I've seen before include "Morally instructs" , "Spiritually strengthens" , "schools" .)