Source : Webster's Revised Unabridged Dictionary (1913)

Icelandic \Ice*lan"dic\, a.
   Of or pertaining to Iceland; relating to, or resembling, the
   Icelanders.

Icelandic \Ice*lan"dic\, n.
   The language of the Icelanders. It is one of the Scandinavian
   group, and is more nearly allied to the Old Norse than any
   other language now spoken.

Source : WordNet®

Icelandic
     adj : of or relating to Iceland or its people or culture;
           "Icelandic ports"; "the Icelandic president is a
           woman"; "Icelandic sagas"

Icelandic
     n : a Scandinavian language that is the official language of
         Iceland