The Collaborative International Dictionary of English v.0.48:

Tom \Tom\, n.
   1. A familiar contraction of Thomas, a proper name of a
      man.
      [Webster 1913 Suppl.]

   2. The male of certain animals; -- often used adjectively or
      in composition; as, tom turkey, tomcat, etc.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Thomas
    n 1: United States clockmaker who introduced mass production
         (1785-1859) [syn: Thomas, Seth Thomas]
    2: United States socialist who was a candidate for president six
       times (1884-1968) [syn: Thomas, Norman Thomas, Norman
       Mattoon Thomas]
    3: a radio broadcast journalist during World War I and World War
       II noted for his nightly new broadcast (1892-1981) [syn:
       Thomas, Lowell Thomas, Lowell Jackson Thomas]
    4: Welsh poet (1914-1953) [syn: Thomas, Dylan Thomas, Dylan
       Marlais Thomas]
    5: the Apostle who would not believe the resurrection of Jesus
       until he saw Jesus with his own eyes [syn: Thomas, Saint
       Thomas, St. Thomas, doubting Thomas, Thomas the
       doubting Apostle]

The Free On-line Dictionary of Computing (19 January 2023):

Thomas

    A language compatible with the language
   Dylan(TM).  Thomas is NOT Dylan(TM).

   The first public release of a translator to Scheme by Matt
   Birkholz, Jim Miller, and Ron Weiss, written at Digital
   Equipment Corporation's Cambridge Research Laboratory runs
   (slowly) on MIT's CScheme, DEC's Scheme->C, Marc
   Feeley's Gambi, Macintosh, PC, Vax, MIPS, Alpha,
   680x0.

   (ftp://gatekeeper.pa.dec.com/pub/DEC/Thomas).

   Mailing list: .

   ["Dylan(TM) an object-oriented dynamic language", Apple
   Computer, Eastern Research and Technology, April 1992].

   (1992-09-11)