Furtive look (4)
(Other definitions for leer that I've seen before include "Suggestive or sneering grin" , "unpleasant look" , "Give lascivious look" , "Give sly look" , "Lewd look" .)
'furtive look' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for peek that I've seen before include "Furtive glance" , "Sly look, peep" , "Secret look" , "Repeatedly look like this" , "Take brief or surreptitious look" .)
'furtive look' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for peep that I've seen before include "Chirp" , "Look surreptitiously - through a keyhole?" , "Look quickly" , "Peek" , "Look secretly" .)