The Collaborative International Dictionary of English v.0.48:

Bigot \Big"ot\, a.
   Bigoted. [Obs.]
   [1913 Webster]

         In a country more bigot than ours.       --Dryden.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bigot \Big"ot\, n. [F. bigot a bigot or hypocrite, a name once
   given to the Normans in France. Of unknown origin; possibly
   akin to Sp. bigote a whisker; hombre de bigote a man of
   spirit and vigor; cf. It. s-bigottire to terrify, to appall.
   Wedgwood and others maintain that bigot is from the same
   source as Beguine, Beghard.]
   [1913 Webster]
   1. A hypocrite; esp., a superstitious hypocrite. [Obs.]
      [1913 Webster]

   2. A person who regards his own faith and views in matters of
      religion as unquestionably right, and any belief or
      opinion opposed to or differing from them as unreasonable
      or wicked. In an extended sense, a person who is
      intolerant of opinions which conflict with his own, as in
      politics or morals; one obstinately and blindly devoted to
      his own church, party, belief, or opinion.
      [1913 Webster]

            To doubt, where bigots had been content to wonder
            and believe.                          --Macaulay.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bigot
    n 1: a prejudiced person who is intolerant of any opinions
         differing from his own

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "bigot":
   Anglophobe, Russophobe, approver, ass, bitter-ender, bug,
   bullethead, chauvinist, diehard, doctrinaire, dogmatist,
   dogmatizer, donkey, fanatic, fiend, freak, hardnose, hater,
   illiberal, infallibilist, intolerant, intransigeant, intransigent,
   jingo, last-ditcher, male chauvinist, man-hater, maniac, maverick,
   misanthrope, misanthropist, misogynist, mule, nut, opinionist,
   perverse fool, pig, pighead, positivist, purist, racist, sexist,
   standpat, standpatter, stickler, superpatriot, ultranationalist,
   woman-hater, xenophobe, zealot



The Jargon File (version 4.4.7, 29 Dec 2003):

bigot
 n.

    [common] A person who is religiously attached to a particular computer,
    language, operating system, editor, or other tool (see religious issues).
    Usually found with a specifier; thus, Cray bigot, ITS bigot, APL bigot, VMS
    bigot, Berkeley bigot. Real bigots can be distinguished from mere partisans
    or zealots by the fact that they refuse to learn alternatives even when the
    march of time and/or technology is threatening to obsolete the favored
    tool. It is truly said ?You can tell a bigot, but you can't tell him much.?
    Compare weenie, Amiga Persecution Complex.


The Free On-line Dictionary of Computing (30 December 2018):

bigot

   A person who is religiously attached to a particular computer,
   language, operating system, editor, or other tool (see
   religious issues).  Usually found with a specifier; thus,
   "Cray bigot", "ITS bigot", "APL bigot", "VMS bigot", "Berkeley
   bigot".  Real bigots can be distinguished from mere partisans
   or zealots by the fact that they refuse to learn alternatives
   even when the march of time and/or technology is threatening
   to obsolete the favoured tool.  It is truly said "You can tell
   a bigot, but you can't tell him much."  Compare weenie.

   [Jargon File]


The Devil's Dictionary (1881-1906):

BIGOT, n.  One who is obstinately and zealously attached to an opinion
that you do not entertain.