Source : Webster's Revised Unabridged Dictionary (1913)

Treat \Treat\, v. t. [imp. & p. p. {Treated}; p. pr. & vb. n.
   {Treating}.] [{OE}. treten, OF. traitier, F. traiter, from L.
   tractare to draw violently, to handle, manage, treat, v.
   intens. from trahere, tractum, to draw. See {Trace}, v. t.,
   and cf. {Entreat}, {Retreat}, {Trait}.]
   1. To handle; to manage; to use; to bear one's self toward;
      as, to treat prisoners cruelly; to treat children kindly.

   2. To discourse on; to handle in a particular manner, in
      writing or speaking; as, to treat a subject diffusely.

   3. To entertain with food or drink, especially the latter, as
      a compliment, or as an expression of friendship or regard;
      as, to treat the whole company.

   4. To negotiate; to settle; to make terms for. [Obs.]

            To treat the peace, a hundred senators Shall be
            commissioned.                         --Dryden.

   5. (Med.) To care for medicinally or surgically; to manage in
      the use of remedies or appliances; as, to treat a disease,
      a wound, or a patient.

   6. To subject to some action; to apply something to; as, to
      treat a substance with sulphuric acid. --Ure.

   7. To entreat; to beseech. [Obs.] --Ld. Berners.