Treaty \Trea"ty\, n.; pl. Treaties. [OE. tretee, F. trait['e],
   LL. tractatus; cf. L. tractatus a handling, treatment,
   consultation, tractate. See Treat, and cf. Tractate.]
   1. The act of treating for the adjustment of differences, as
      for forming an agreement; negotiation. "By sly and wise
      treaty." --Chaucer.
      [1913 Webster]

            He cast by treaty and by trains
            Her to persuade.                      --Spenser.
      [1913 Webster]

   2. An agreement so made; specifically, an agreement, league,
      or contract between two or more nations or sovereigns,
      formally signed by commissioners properly authorized, and
      solemnly ratified by the several sovereigns, or the
      supreme power of each state; an agreement between two or
      more independent states; as, a treaty of peace; a treaty
      of alliance.
      [1913 Webster]

   3. A proposal tending to an agreement. [Obs.] --Shak.
      [1913 Webster]

   4. A treatise; a tract. [Obs.] --Sir T. Browne.
      [1913 Webster]