(n.) A person in a state of slavery; one whose person and liberty are subjected to the authority of a master.

bailsman bondmaid bondman bondslave bondswoman captive chattel chattel slave churl concubine debt slave galley slave godfather godparent guarantee guarantor guaranty helot homager insurer liege liege man liege subject mainpernor mortgagor odalisque peon serf servant slave sponsor subject surety theow thrall underwriter vassal villein warrantor