noun

1. Historical a person declared by a court of law to be deprived of legal rights and protection, generally for the commission of some crime: the killing of such a person was not a legal offense
2. a habitual or notorious criminal who is a fugitive from the law
3. a fierce or uncontrollable horse or other animal

Etymology: ME outlawe < OE utlaga < ON útlagr, lit., outlawed: see out & law

transitive verb

1. Historical to declare to be an outlaw
2. in the U.S., to remove the legal force of (contracts, etc.)
3. to declare unlawful or illegal
4. to bar, or ban