The Collaborative International Dictionary of English v.0.48:

Negotiate \Ne*go"ti*ate\, v. t. [imp. & p. p. Negotiated; p.
   pr. & vb. n. Negotiating.]
   1. To carry on negotiations concerning; to procure or arrange
      for by negotiation; as, to negotiate peace, or an
      exchange.
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            Constantinople had negotiated in the isles of the
            Archipelago . . . the most indispensable supplies.
                                                  --Gibbon.
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   2. To transfer for a valuable consideration under rules of
      commercial law; to sell; to pass.
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            The notes were not negotiated to them in the usual
            course of business or trade.          --Kent.
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The Collaborative International Dictionary of English v.0.48:

Negotiate \Ne*go"ti*ate\, v. i. [L. negotiatus, p. p. of
   negotiari, fr. negotium business; nec not + otium leisure.
   Cf. Neglect.]
   1. To transact business; to carry on trade. [Obs.] --Hammond.
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   2. To treat with another respecting purchase and sale or some
      business affair; to bargain or trade; as, to negotiate
      with a man for the purchase of goods or a farm.
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   3. To hold intercourse respecting a treaty, league,
      convention, or other proposed agreement; to treat with,
      respecting peace or commerce; to conduct communications or
      conferences.
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            He that negotiates between God and man
            Is God's ambassador.                  --Cowper.
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   4. To intrigue; to scheme. [Obs.] --Bacon.
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WordNet (r) 3.0 (2006):

negotiate
    v 1: discuss the terms of an arrangement; "They negotiated the
         sale of the house" [syn: negociate, negotiate, talk
         terms]
    2: succeed in passing through, around, or over; "The hiker
       negociated the high mountain pass" [syn: negotiate,
       negociate]