Attila follower (3)
I believe the answer is:
hun
'attila follower' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hun that I've seen before include "Warlike invader" , "Warlike nomad" , "Barbarian" , "Asiatic invader" , "Attila was a notorious one" .)