| Mainpernor (n.) A surety, under the old writ of mainprise, for a prisoner's appearance in court at a day. Thesaurus Entries 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 |