Source : Webster's Revised Unabridged Dictionary (1913)

Party \Par"ty\, n.; pl. {Parties}. [F. parti and partie, fr. F.
   partir to part, divide, L. partire, partiri. See {Part}, v.]
   1. A part or portion. [Obs.] ``The most party of the time.''
      --Chaucer.

   2. A number of persons united in opinion or action, as
      distinguished from, or opposed to, the rest of a community
      or association; esp., one of the parts into which a people
      is divided on questions of public policy.

            Win the noble Brutus to our party.    --Shak.

            The peace both parties want is like to last.
                                                  --Dryden.

   3. A part of a larger body of company; a detachment;
      especially (Mil.), a small body of troops dispatched on
      special service.

   4. A number of persons invited to a social entertainment; a
      select company; as, a dinner party; also, the
      entertainment itself; as, to give a party.

   5. One concerned or interested in an affair; one who takes
      part with others; a participator; as, he was a party to
      the plot; a party to the contract.

   6. The plaintiff or the defendant in a lawsuit, whether an
      individual, a firm, or corporation; a litigant.

            The cause of both parties shall come before the
            judges.                               --Ex. xxii. 9.

   7. Hence, any certain person who is regarded as being opposed
      or antagonistic to another.

            It the jury found that the party slain was of
            English race, it had been adjudged felony. --Sir J.
                                                  Davies.

   8. Cause; side; interest.

            Have you nothing said Upon this Party 'gainst the
            Duke of Albany?                       --Shak.

   9. A person; as, he is a queer party. [Now accounted a
      vulgarism.]

   Note: ``For several generations, our ancestors largely
         employed party for person; but this use of the word,
         when it appeared to be reviving, happened to strike,
         more particularly, the fancy of the vulgar; and the
         consequence has been, that the polite have chosen to
         leave it in their undisputed possession.'' --Fitzed.
         Hall.

   {Party jury} (Law), a jury composed of different parties, as
      one which is half natives and half foreigners.

   {Party man}, a partisan. --Swift.

   {Party spirit}, a factious and unreasonable temper, not
      uncommonly shown by party men. --Whately.

   {Party verdict}, a joint verdict. --Shak.

   {Party wall}.
      (a) (Arch.) A wall built upon the dividing line between
          two adjoining properties, usually having half its
          thickness on each property.
      (b) (Law) A wall that separates adjoining houses, as in a
          block or row.

Party \Par"ty\, a. [F. parti divided, fr. partir to divide. See
   {Part}, v., and cf. {Partite}.]
   1. (Her.) Parted or divided, as in the direction or form of
      one of the ordinaries; as, an escutcheon party per pale.

   2. Partial; favoring one party.

Party \Par"ty\, adv.
   Partly. [Obs.] --Chaucer.

Source : WordNet®

party
     n 1: an organization to gain political power; "in 1992 Perot
          tried to organize a third party at the national level"
          [syn: {political party}]
     2: an occasion on which people can assemble for social
        interaction and entertainment; "he planned a party to
        celebrate Bastille Day"
     3: a band of people associated temporarily in some activity;
        "they organized a party to search for food"; "the company
        of cooks walked into the kitchen" [syn: {company}]
     4: a group of people gathered together for pleasure; "she
        joined the party after dinner"
     5: a person involved in legal proceedings; "the party of the
        first part"

party
     v : have or participate in a party; "The students were partying
         all night before the exam"

Source : Free On-Line Dictionary of Computing

@-party
     
         /at'par-tee/ (Or "@-sign party" /at'si:n par'tee/,
        from the {@} sign in an {electronic mail address}) A
        semi-closed party thrown for hackers at a science-fiction
        convention (especially the annual Worldcon); one must have an
        {electronic mail address} to get in, or at least be in company
        with someone who does.  One of the most reliable opportunities
        for hackers to meet {face-to-face} with people who might
        otherwise be represented by mere phosphor dots on their
        screens.
     
        Compare {boink}.
     
        [{Jargon File}]
     
        (1996-05-08)