Where glasses sit, precisely (2,3,4)
I believe the answer is:
on the nose
'precisely' is the definition.
(I know that precisely can be written as on the nose)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for on the nose that I've seen before include "just to take the first place" , "Exactly in America" , "There's a bridge here" , "Not to be placed" , "(In race betting) to win only" .)