Look round to leg, perhaps? (4)
I believe the answer is:
ogle
'look' is the definition.
(ogling is a kind of looking)
'round to leg perhaps' is the wordplay.
'round' becomes 'o' (round can mean a round object).
'perhaps' indicates an anagram.
'leg' anagrammed gives 'gle'.
'o'+'gle'='OGLE'
(Other definitions for ogle that I've seen before include "Cast amorous glances" , "Close scrutiny" , "Cast flirtatious glances at" , "Stare at in a lecherous manner" , "Gaze at lecherously" .)