means A person who breaks the law and lives outside its protection, often a fugitive from justice; historically, one formally placed beyond the reach of legal rights.

from From Old English ūtlaga, borrowed from Old Norse útlagi — literally 'out-law,' from út ('out') and lög ('law'). In early medieval England, to be 'outlawed' was a real legal sentence: the court declared you útan laga, 'outside the law,' which meant the law would no longer shield you. Your property could be seized, and — chillingly — killing you was no crime, since you no longer counted as a protected person. The romantic gunslinger sense came much later; the word began as a sentence of legal abandonment.