Source : Webster's Revised Unabridged Dictionary (1913)

Dravidian \Dra*vid"i*an\, a. [From Skr. Dr[=a]vi[dsdot]a, the
   name of the southern portion of the peninsula of India.]
   (Ethnol.)
   Of or pertaining to the Dravida.

   {Dravidian languages}, a group of languages of Southern
      India, which seem to have been the idioms of the natives,
      before the invasion of tribes speaking Sanskrit. Of these
      languages, the Tamil is the most important.