Source : Webster's Revised Unabridged Dictionary (1913)

Indenture \In*den"ture\ (?; 135), n. [OE. endenture, OF.
   endenture, LL. indentura a deed in duplicate, with indented
   edges. See the Note below. See {Indent}.]
   1. The act of indenting, or state of being indented.

   2. (Law) A mutual agreement in writing between two or more
      parties, whereof each party has usually a counterpart or
      duplicate; sometimes in the pl., a short form for
      {indentures of apprenticeship}, the contract by which a
      youth is bound apprentice to a master.