Rage about gibe from relative (5,4)
I believe the answer is:
great aunt
'relative' is the definition.
(I've seen this before)
'rage about gibe' is the wordplay.
'about' indicates an anagram.
'gibe' becomes 'taunt' (I've seen this in another clue).
'rage' is an anagram of 'grea'.
'grea'+'taunt'='GREAT-AUNT'
'from' is the link.
(Other definitions for great aunt that I've seen before include "elderly relative" , "Female earlier in line" , "Old lady" , "Relation" .)