"You mean me?!" (3)
I believe the answer is:
moi
'you mean me?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for moi that I've seen before include "affected me" , "Daniel arap . . ., Kenyan president for 24 years" , "Me - in France" , "Just me, monsieur" , "egoist" .)