Source : Webster's Revised Unabridged Dictionary (1913)

Disclaimer \Dis*claim"er\, n.
   1. One who disclaims, disowns, or renounces.

   2. (Law) A denial, disavowal, or renunciation, as of a title,
      claim, interest, estate, or trust; relinquishment or
      waiver of an interest or estate. --Burrill.

   3. A public disavowal, as of pretensions, claims, opinions,
      and the like. --Burke.

Source : WordNet®

disclaimer
     n 1: (law) a voluntary repudiation of a person's legal claim to
          something
     2: denial of any connection with or knowledge of [syn: {disavowal}]

Source : Free On-Line Dictionary of Computing

disclaimer
     
         Statement ritually appended to many {Usenet}
        postings (sometimes automatically, by the posting software)
        reiterating the fact (which should be obvious, but is easily
        forgotten) that the article reflects its author's opinions and
        not necessarily those of the organisation running the computer
        through which the article entered the network.
     
        [{Jargon File}]
     
        (1995-07-30)