[1] : The Collaborative International Dictionary of English v.0.48

nay \nay\ n=a, adv. icel. nei; akin to e. no. see no,
   adv.
   1. no; -- a negative answer to a question asked, or a request
      made, now superseded by no. opposed to aye or yea.
      see also yes.
      1913 webster +pjc

            and eke when i say "ye," ne say not "nay."
                                                  --chaucer.
      1913 webster

            i tell you nay; but except ye repent, ye shall all
            likewise perish.                      --luke xiii.
                                                  3.
      1913 webster

            and now do they thrust us out privily? nay, verily;
            but let them come themselves and fetch us out.
                                                  --acts xvi.
                                                  37.
      1913 webster

            he that will not when he may,
            when he would he shall have nay.      --old prov.
      1913 webster

   note: before the time of henry viii. nay was used to answer
         simple questions, and no was used when the form of the
         question involved a negative expression; nay was the
         simple form, no the emphatic. --skeat.
         1913 webster

   2. not this merely, but also; not only so, but; -- used to
      mark the addition or substitution of a more explicit or
      more emphatic phrase.
      1913 webster

   note: nay in this sense may be interchanged with yea. "were
         he my brother, nay, my kingdom's heir." --shak.
         1913 webster
see also:
no no aye yea yes 

[2] : The Collaborative International Dictionary of English v.0.48

nay \nay\, n.; pl. nays.
   1. denial; refusal.
      1913 webster

   2. a negative vote; one who votes in the negative.
      1913 webster

   it is no nay, there is no denying it. obs. --haucer.
      1913 webster
see also:
nays it is no nay 

[3] : The Collaborative International Dictionary of English v.0.48

nay \nay\, v. t.  i.
   to refuse. obs. --holinshed.
   1913 webster

[4] : WordNet (r) 2.0

nay
     n : a negative; "the nays have it" ant: yea
     adv : not this merely but also; not only so but; "each of us is
           peculiar, nay, in a sense unique"
see also:
yea 

[5] : Moby Thesaurus II by Grady Ward, 1.0

116 moby thesaurus words for "nay":
   australian ballot, hare system, no, abnegation, au contraire, aye,
   ballot, canvass, canvassing, casting vote, certainly not, con,
   contradiction, counting heads, cumulative voting, deciding vote,
   declension, declination, declinature, declining, denial,
   deprivation, disagreement, disallowance, disclaimer, disclamation,
   disobedience, dissent, division, enfranchisement, fagot vote,
   far from it, franchise, graveyard vote, hand vote, holding back,
   indeed, interest, list system, naysaying, negation, negative,
   negative answer, negative attitude, negativeness, negativism,
   negativity, nein, nit, nix, no, no such thing, non, nonacceptance,
   noncompliance, nonconsent, nonobservance, nontransferable vote,
   nope, not, not a bit, not a jot, not a whit, not really, not so,
   nyet, plebiscite, plebiscitum, plumper, plural vote, poll, polling,
   preferential voting, pro, proportional representation, proxy,
   quite the contrary, recantation, record vote, referendum, refusal,
   rejection, representation, repudiation, retention, right to vote,
   rising vote, say, secret ballot, show of hands, side, single vote,
   snap vote, straw vote, suffrage, the affirmative, the negative,
   thumbs-down, to the contrary, transferable vote, truly, turndown,
   unwillingness, verily, viva voce, voice, voice vote, vote, voting,
   voting right, withholding, write-in, write-in vote, yea,
   yeas and nays, yes

Nay >> N Words
Nay, definition of term: Nay
nay_pag1.html