Source : Webster's Revised Unabridged Dictionary (1913)

Digit \Dig"it\, v. t.
   To point at or out with the finger. [R.]

Digit \Dig"it\, n. [L. digitus finger; prob. akin to Gr. ?, of
   uncertain origin; possibly akin to E. toe. Cf. {Dactyl}.]
   1. (Zo["o]l.) One of the terminal divisions of a limb
      appendage; a finger or toe.

            The ruminants have the ``cloven foot,'' i. e., two
            hoofed digits on each foot.           --Owen.

   2. A finger's breadth, commonly estimated to be three fourths
      of an inch.

   3. (Math.) One of the ten figures or symbols, 0, 1, 2, 3, 4,
      5, 6, 7, 8, 9, by which all numbers are expressed; -- so
      called because of the use of the fingers in counting and
      computing.

   Note: By some authorities the symbol 0 is not included with
         the digits.

   4. (Anat.) One twelfth part of the diameter of the sun or
      moon; -- a term used to express the quantity of an
      eclipse; as, an eclipse of eight digits is one which hides
      two thirds of the diameter of the disk.

Source : WordNet®

digit
     n 1: one of the elements that collectively form a system of
          numbers; "0 and 1 are digits" [syn: {figure}]
     2: the length of breadth of a finger used as a linear measure
        [syn: {finger}, {fingerbreadth}, {finger's breadth}]
     3: a finger or toe in human beings or corresponding part in
        other vertebrates [syn: {dactyl}]

Source : Free On-Line Dictionary of Computing

digit
     
        An employee of Digital Equipment Corporation.  See also
        {VAX}, {VMS}, {PDP-10}, {TOPS-10}, {DEChead}, {double
        DECkers}, {field circus}.
     
        [{Jargon File}]