indenture
1. in.den.ture \in-'den-ch*r\ n [3indent] 1a1: a document or a section of a document that is indented 1a2: a formal or official document usu. executed in two or more copies 1a3: a contract binding one person to work for another for a given period o f time - usu. used in pl. 1b: a formal certificate (as an inventory or voucher) prepared for purposes of control 2: INDENTATION 3: DENT 2. indenture \-'dench-(*-)rin\ vt or in.den.tur.ing 1: to bind (as an apprentice) by indentures archaic 2: to make a dent in
Webster's English Dictionary