The Collaborative International Dictionary of English v.0.48:

Proffer \Prof"fer\, v. t. [imp. & p. p. Proffered; p. pr. &
   vb. n. Proffering.] [OE. profren, proferen, F. prof['e]rer,
   fr. L. proferre to bring forth or forward, to offer; pro
   forward + ferre to bring. See Bear to produce.]
   1. To offer for acceptance; to propose to give; to make a
      tender of; as, to proffer a gift; to proffer services; to
      proffer friendship. --Shak.
      [1913 Webster]

            I reck not what wrong that thou me profre.
                                                  --Chaucer.
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   2. To essay or attempt of one's own accord; to undertake, or
      propose to undertake. [R.] --Milton.
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The Collaborative International Dictionary of English v.0.48:

Proffer \Prof"fer\, n.
   1. An offer made; something proposed for acceptance by
      another; a tender; as, proffers of peace or friendship.
      [1913 Webster]

            He made a proffer to lay down his commission.
                                                  --Clarendon.
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   2. Essay; attempt. [R.] --Bacon.
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WordNet (r) 3.0 (2006):

proffer
    n 1: a proposal offered for acceptance or rejection; "it was a
         suggestion we couldn't refuse" [syn: suggestion,
         proposition, proffer]
    v 1: present for acceptance or rejection; "She offered us all a
         cold drink" [syn: offer, proffer]