Source : Webster's Revised Unabridged Dictionary (1913)

Troglodyte \Trog"lo*dyte\, n. [L. troglodytae, pl., Gr. ? one
   who creeps into holes; ? a hole, cavern (fr. ? to gnaw) + ?
   enter: cf. F. troglodyte.]
   1. (Ethnol.) One of any savage race that dwells in caves,
      instead of constructing dwellings; a cave dweller. Most of
      the primitive races of man were troglodytes.

            In the troglodytes' country there is a lake, for the
            hurtful water it beareth called the ``mad lake.''
                                                  --Holland.

   2. (Zo["o]l.) An anthropoid ape, as the chimpanzee.

   3. (Zo["o]l.) The wren.

Source : WordNet®

troglodyte
     n 1: one who lives in solitude [syn: {hermit}, {recluse}, {solitary},
           {solitudinarian}]
     2: someone who dwells in a cave [syn: {caveman}, {cave man}, {cave
        dweller}]

Source : Free On-Line Dictionary of Computing

troglodyte
     
         (Commodore) 1. A hacker who never leaves his cubicle.
        The term "Gnoll" (from Dungeons & Dragons) is also reported.
     
        2. A curmudgeon attached to an obsolescent computing
        environment.  The combination "ITS troglodyte" was flung
        around some during the {Usenet} and {e-mail} wringle-wrangle
        attending the 2.x.x revision of the {Jargon File}; at least
        one of the people it was intended to describe adopted it with
        pride.
     
        [{Jargon File}]
     
        (1995-01-11)