Casting a glance at, 5 letters
Checking (someone) out, 5 letters
Checking out, in a way (Var.), 5 letters
Checking over visually (Var.), 5 letters
Fixated on, perhaps, 5 letters
Fixing one's sights on, 5 letters
Giving a once-over (Var.), 5 letters
Giving the once over, 5 letters
Looking at lustfully, perhaps, 5 letters
Looking up and down, 5 letters
Not losing track of, 5 letters
Observing carefully, 5 letters
Reading a picture book, 5 letters