The Collaborative International Dictionary of English v.0.48:

Revel \Rev"el\, n. (Arch.)
   See Reveal. [R.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Revel \Rev"el\, n. [OF. revel rebellion, disorder, feast, sport.
   See Revel, v. i.]
   A feast with loose and noisy jollity; riotous festivity or
   merrymaking; a carousal.
   [1913 Webster]

         This day in mirth and revel to dispend. --Chaucer.
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         Some men ruin . . . their bodies by incessant revels.
                                                  --Rambler.
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   Master of the revels, Revel master. Same as Lord of
      misrule, under Lord.
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The Collaborative International Dictionary of English v.0.48:

Reveal \Re*veal"\, n.
   1. A revealing; a disclosure. [Obs.]
      [1913 Webster]

   2. (Arch.) The side of an opening for a window, doorway, or
      the like, between the door frame or window frame and the
      outer surface of the wall; or, where the opening is not
      filled with a door, etc., the whole thickness of the wall;
      the jamb. [Written also revel.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Revel \Rev"el\, v. i. [imp. & p. p. Reveledor Revelled; p.
   pr. & vb. n. Reveling or Revelling.] [OF. reveler to
   revolt, rebel, make merry, fr. L. rebellare. See Rebel.]
   1. To feast in a riotous manner; to carouse; to act the
      bacchanalian; to make merry. --Shak.
      [1913 Webster]

   2. To move playfully; to indulge without restraint. "Where
      joy most revels." --Shak.
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The Collaborative International Dictionary of English v.0.48:

Revel \Re*vel"\, v. t. [L. revellere; re- + vellere to pluck,
   pull.]
   To draw back; to retract. [Obs.] --Harvey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

revel
    n 1: unrestrained merrymaking [syn: revel, revelry]
    v 1: take delight in; "he delights in his granddaughter" [syn:
         delight, enjoy, revel]
    2: celebrate noisily, often indulging in drinking; engage in
       uproarious festivities; "The members of the wedding party
       made merry all night"; "Let's whoop it up--the boss is gone!"
       [syn: revel, racket, make whoopie, make merry, make
       happy, whoop it up, jollify, wassail]