Source : Webster's Revised Unabridged Dictionary (1913)

Braille \Braille\, n.
   A system of printing or writing for the blind in which the
   characters are represented by tangible points or dots. It was
   invented by Louis Braille, a French teacher of the blind.

Source : WordNet®

Braille
     n 1: French educator who lost his sight at the age of three and
          who invented a system of writing and printing for
          sightless people (1809-152) [syn: {Louis Braille}]
     2: a point system of writing in which patterns of raised dots
        represent letters and numerals
     v : transcribe in Braille

Source : Free On-Line Dictionary of Computing

braille
     
         /breyl/ (Often capitalised) A class of
        {writing systems}, intended for use by blind and low-vision
        users, which express {glyphs} as raised dots.  Currently
        employed braille standards use eight dots per cell, where a
        cell is a glyph-space two dots across by four dots high; most
        glyphs use only the top six dots.
     
        Braille was developed by Louis Braille (pronounced /looy
        bray/) in France in the 1820s.  Braille systems for most
        languages can be fairly trivially converted to and from the
        usual script.
     
        Braille has several totally coincidental parallels with
        digital computing: it is {binary}, it is based on groups of
        eight bits/dots and its development began in the 1820s, at the
        same time {Charles Babbage} proposed the {Difference Engine}.
     
        Computers output Braille on {braille displays} and {braille
        printers} for hard copy.
     
        {British Royal National Institute for the Blind
        (http://www.rnib.org.uk/wesupply/fctsheet/braille.htm)}.
     
        (1998-10-19)