Source : Webster's Revised Unabridged Dictionary (1913)

Font \Font\, n. [F. fonte, fr. fondre to melt or cast. See
   {Found} to cast, and cf. {Fount} a font.] (Print.)
   A complete assortment of printing type of one size, including
   a due proportion of all the letters in the alphabet, large
   and small, points, accents, and whatever else is necessary
   for printing with that variety of types; a fount.

Font \Font\, n. [AS. font, fant, fr. L. fons, fontis, spring,
   fountain; cf. OF. font, funt, F. fonts, fonts baptismaux, pl.
   See {Fount}.]
   1. A fountain; a spring; a source.

            Bathing forever in the font of bliss. --Young.

   2. A basin or stone vessel in which water is contained for
      baptizing.

            That name was given me at the font.   --Shak.

Source : WordNet®

font
     n 1: a specific size and style of type within a type family [syn:
           {fount}, {typeface}, {face}]
     2: bowl for baptismal water [syn: {baptismal font}, {baptistry},
         {baptistery}]

Source : Free On-Line Dictionary of Computing

font
     
         A set of {glyphs} ({images}) representing the
        {characters} from some particular {character set} in a
        particular size and {typeface}.  The image of each character
        may be encoded either as a {bitmap} (in a {bitmap font}) or by
        a higher-level description in terms of lines and areas (an
        {outline font}).
     
        There are several different computer representations for
        fonts, the most widely known are {Adobe Systems, Inc.}'s
        {PostScript} font definitions and {Apple}'s {TrueType}.
        {Window systems} can display different fonts on the screen and
        print them.
     
        [Other types of font?]
     
        (2001-04-27)