The Collaborative International Dictionary of English v.0.48:

Aleutian \Aleutian\ n.
   1. a member of the people inhabiting the Aleutian Islands.

   Syn: Aleut
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Aleutian \A*leu"tian\, Aleutic \A*leu"tic\, a. [Said to be from
   the Russ. aleut a bold rock.]
   Of or pertaining to a chain of islands between Alaska and
   Kamtchatka; also, designating these islands.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Aleutian
    adj 1: of or relating to the Aleut or their language or culture
    n 1: a member of the people inhabiting the Aleutian Islands and
         southwestern Alaska [syn: Aleut, Aleutian]