a robber, especially a member of a gang or marauding band.
an outlaw or highwayman.
Informal. a person who takes unfair advantage of others, as a merchant who overcharges; swindler; cheat. a vendor, cab driver, etc., who operates a business or works without a required license or permit, and without observing the usual rules or practices.
Military Informal. an enemy aircraft, especially an attacking fighter.
make out like a bandit, Slang. to be extremely successful; profit greatly: The early investors in the company have made out like bandits.