Tulip may be illuminated (3,2)
I believe the answer is:
lit up
'illuminated' is the definition.
(I've seen this in another clue)
'tulip may be' is the wordplay.
'may be' indicates an anagram.
'tulip' with letters rearranged gives 'LIT-UP'.
(Other definitions for lit up that I've seen before include "Started smoking - being drugged!" , "Illuminated (by drink or drugs?)" , "was illuminating" , "Flashing" , "Drunk (as a bulb?)" .)