The Collaborative International Dictionary of English v.0.48:

Canadian \Ca*na"di*an\, a.
   Of or pertaining to Canada. -- n. A native or inhabitant of
   Canada.
   [1913 Webster]

   Canadian period (Geol.), A subdivision of the American
      Lower Silurian system embracing the calciferous, Quebec,
      and Chazy epochs. This period immediately follows the
      primordial or Cambrian period, and is by many geologists
      regarded as the beginning of the Silurian age, See the
      Diagram, under Geology.

   Canadian goose, an erroneous variant of Canada goose.
      [1913 Webster] canafistola

WordNet (r) 3.0 (2006):

Canadian
    adj 1: of or relating to Canada or its people
    n 1: a native or inhabitant of Canada
    2: a river rising in northeastern New Mexico and flowing
       eastward across the Texas panhandle to become a tributary of
       the Arkansas River in Oklahoma [syn: Canadian, Canadian
       River]