NOUN (2)

1. a native or inhabitant of Russia;

2. the Slavic language that is the official language of Russia;


ADJECTIVE (1)

1. of or pertaining to or characteristic of Russia or its people or culture or language;
- Example: "Russian dancing"

The Collaborative International Dictionary of English v.0.48:

Russian \Rus"sian\ (r[u^]sh"an or r[udd]"shan; 277), a.
   Of or pertaining to Russia, its inhabitants, or language. --
   n. A native or inhabitant of Russia; the language of Russia.

   Russian bath. See under Bath.
      [1913 Webster] Russian Church

WordNet (r) 3.0 (2006):

Russian
    adj 1: of or pertaining to or characteristic of Russia or its
           people or culture or language; "Russian dancing"
    n 1: a native or inhabitant of Russia
    2: the Slavic language that is the official language of Russia

The Devil's Dictionary (1881-1906):

RUSSIAN, n.  A person with a Caucasian body and a Mongolian soul.  A
Tartar Emetic.