A lawless fellow who lives by plunder; one of a band of robbers; especially, one of a gang living in mountain retreats; a highwayman; a freebooter
A brigand is someone who attacks people and robs them, especially in mountains or forests. a notorious brigand who hijacked trains. = bandit. a thief, especially one of a group that attacks people in mountains or forests (brigante, from brigare; BRIGADE)