Русско-англо-русский юридический словарь

The term outlawry referred to the formal procedure of declaring someone an outlaw, i.e. putting him outside the sphere of legal protection.[1] In the common law of England, a judgment of (criminal) outlawry was one of the harshest penalties in the legal system, since the outlaw could not use the legal system for protection, e.g. from mob justice. To be declared an outlaw was to suffer a form of civil or social[6] death. The outlaw was debarred from all civilized society. No one was allowed to give him food, shelter, or any other sort of support – to do so was to commit the crime of aiding and abetting, and to be in danger of the ban oneself. (Wikipedia)

A declaration of outlawry deprived the outlaw of the protection of the king and the law; his property was forfeit to the king and he could be killed with impunity. (Oxford Reference)