Source : Webster's Revised Unabridged Dictionary (1913)

Re \Re\ (r[=a]). [It.] (Mus.)
   A syllable applied in solmization to the second tone of the
   diatonic scale of C; in the American system, to the second
   tone of any diatonic scale.

Source : WordNet®

Re
     n 1: a rare heavy polyvalent metallic element that resembles
          manganese chemically and is used in some alloys; is
          obtained as a by-product in refining molybdenum [syn: {rhenium},
           {atomic number 75}]
     2: ancient hawk-headed Egyptian sun god; a universal creator
        [syn: {Ra}]
     3: the syllable naming the second (supertonic) note of any
        major scale in solmization [syn: {ray}]

Source : Free On-Line Dictionary of Computing

RE
     
        {regular expression}

re
     
        1.  The {country code} for Reunion.
     
        2.  /re-/ (From "rehi") Hello again.  A greeting
        originating in, and most often heard on, {Internet}
        interactive conversation services.
     
        [{Jargon File}]
     
        (1999-02-08)