Bandit, robber (7)
I believe the answer is:
brigand
I believe this is a double definition.
'bandit' is the first definition.
(synonyms)
'robber' is the second definition.
(I've seen this before)
(Other definitions for brigand that I've seen before include "Gang member" , "Marauder" , "Plunderer" , "Criminal" , "Outlaw" .)