Hip friend (3)
I believe the answer is:
bro
'hip friend' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bro that I've seen before include "somewhere one feels close to" , "Word used for male relative" , "US form of address" , "who may have a 28 [SIS]?" , "American greeting" .)