When you
stare at someone, or someone stares or spies on you repeatedly, either
checking you out or in a disapproving way.
It can be used to describe the
culprit and also what they are doing.
katy: I think we're being cocknosed.
Anna: Yeah i
know, it's that cocknose
over there, could he be any more cocknosey!
Katy: I
know, cocknosers really get my goat.