Look at lasciviously (4)
I believe the answer is:
ogle
'look at lasciviously' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ogle that I've seen before include "Gape at" , "Regard lecherously" , "Cast lascivious glances" , "Make eyes at" , "as lecher might do?" .)