Ogle the French Queen (4)
I believe the answer is:
leer
'ogle' is the definition.
(I've seen this before)
'the french queen' is the wordplay.
'the french' becomes 'le' ('the' in French).
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'le'+'er'='LEER'
(Other definitions for leer that I've seen before include "Gaze lasciviously at" , "Give sly look" , "Suggestive or sneering grin" , "Look lecherously" , "Lecherous look" .)