See the tip in perspective (9)
I believe the answer is:
viewpoint
'perspective' is the definition.
(I've seen this before)
'see the tip' is the wordplay.
'see' becomes 'view' ('view' can be a synonym of 'see').
'the tip' becomes 'point' ('point' can be a synonym of 'tip'**).
'view'+'point'='VIEWPOINT'
'in' acts as a link.
(Other definitions for viewpoint that I've seen before include "Place from which to admire the scenery" , "Slant" , "Good outlook here" , "Attitude that determines outlook" , "that might be found on hill" .)