Definition of outfangthief in English:

noun

• The right of a lord of a private jurisdiction, more extensive than that of infangthief, to claim for trial a thief, especially one who is the lord's tenant, captured outside the jurisdiction, and to keep any forfeited chattels on conviction; occasionally used to denote the thief so apprehended. Also, more widely: the right of a lord to try any thief apprehended within that lord's jurisdiction, regardless of the accused person's place of origin.