stare at in a lecherous manner.
"he was ogling her breasts"
synonyms: leer at, stare at, gaze at, eye, make eyes at, make sheep's eyes at; informaleye up, give someone the glad eye, give someone a/the once-over, lech after/over, undress with one's eyes, give someone the come-on; informalgawp at, gawk at; informalperv on
"he'd been ogling her ever since she'd entered the room"
a lecherous look.
"a vaguely erotic ogle"