The Collaborative International Dictionary of English v.0.48:

digit \dig"it\ (d[i^]j"[i^]t), n. [L. digitus finger; prob. akin
   to Gr. da`ktylos, of uncertain origin; possibly akin to E.
   toe. Cf. Dactyl.]
   1. (Zool.) One of the terminal divisions of a limb appendage;
      a finger or toe.
      [1913 Webster]

            The ruminants have the "cloven foot," i. e., two
            hoofed digits on each foot.           --Owen.
      [1913 Webster]

   2. A finger's breadth, commonly estimated to be three fourths
      of an inch.
      [1913 Webster]

   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.
      [1913 Webster]

   Note: By some authorities the symbol 0 is not included with
         the digits.
         [1913 Webster]

   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.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

digit \dig"it\, v. t.
   To point at or out with the finger. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

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

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "digit":
   annulary, arch, binary digit, bit, character, cipher, clubfoot,
   dactylion, dog, extremity, fetlock, figure, finger, foot,
   forefinger, forefoot, forepaw, harefoot, heel, hoof, index,
   index finger, instep, integer, little finger, medius,
   middle finger, minimus, notation, number, numeral, numero, pad,
   pastern, patte, paw, pedal extremity, pedes, pes, pied, pinkie,
   pollex, pug, ring finger, sign, sole, splayfoot, symbol, thumb,
   toe, tootsy, trotter, ungula, whole number



The Free On-line Dictionary of Computing (30 December 2018):

digit

   An employee of Digital Equipment Corporation.  See also
   VAX, VMS, PDP-10, TOPS-10, DEChead, double
   DECkers, field circus.

   [Jargon File]