Not the top celeb's result of friction? (7)
I believe the answer is:
blister
'result of friction?' is the definition.
(I've seen this before)
'not the top celeb's' is the wordplay.
'not' becomes 'b' (I can't explain this - if you can you should believe this answer much more).
'the top' means to remove the first letter.
'celeb' becomes 'alister' (I've seen this in another clue).
'alister' with its initial letter taken away is 'lister'.
'b'+'lister'='BLISTER'
Can you help me to learn more?
(Other definitions for blister that I've seen before include "Friction mark" , "lump on skin" , "Give hair dryer treatment" , "Sore bubble on skin" , "Effect of rubbing on skin" .)