Removing top, intimate friend (4)
I believe the answer is:
ally
'friend' is the definition.
(an ally is a friend or supporter)
'removing top intimate' is the wordplay.
'removing top' means to remove the first letter.
'intimate' becomes 'pally' (I've seen this in another clue).
'pally' with its initial letter taken off is 'ALLY'.
(Other definitions for ally that I've seen before include "State formally cooperating with another" , "Colleague, confederate" , "Comrade in arms" , "Associate that provides assistance" , "Join - friend" .)