Source : Webster's Revised Unabridged Dictionary (1913)

Aryan \Ar"yan\ ([aum]r"yan or [a^]r"[i^]*an), a.
   Of or pertaining to the people called Aryans; Indo-European;
   Indo-Germanic; as, the Aryan stock, the Aryan languages.

Aryan \Ar"yan\ ([aum]r"yan or [a^]r"[i^]*an), n. [Skr. [=a]rya
   excellent, honorable; akin to the name of the country Iran,
   and perh. to Erin, Ireland, and the early name of this
   people, at least in Asia.]
   1. One of a primitive people supposed to have lived in
      prehistoric times, in Central Asia, east of the Caspian
      Sea, and north of the Hindoo Koosh and Paropamisan
      Mountains, and to have been the stock from which sprang
      the Hindoo, Persian, Greek, Latin, Celtic, Teutonic,
      Slavonic, and other races; one of that ethnological
      division of mankind called also Indo-European or
      Indo-Germanic.

Source : WordNet®

Aryan
     adj : of or relating to the former Indo-European people;
           "Indo-European migrations" [syn: {Indo-European}, {Indo-Aryan}]
     n 1: (according to Nazi doctrine) a Caucasian person of Nordic
          descent (and not a Jew)
     2: a member of the prehistoric people who spoke Proto-Indo
        European [syn: {Indo-European}]