Source : Webster's Revised Unabridged Dictionary (1913)

Catalan \Cat"a*lan\, a.
   Of or pertaining to Catalonia. -- n. A native or inhabitant
   of Catalonia; also, the language of Catalonia.

   {Catalan furnace}, {Catalan forge} (Metal.), a kind of
      furnace for producing wrought iron directly from the ore.
      It was formerly much used, esp. in Catalonia, and is still
      used in some parts of the United States and elsewhere.

Source : WordNet®

Catalan
     adj 1: relating to or denoting or characteristic of Catalonia or
            its inhabitants; "Catalan independence movement"
     2: relating to or characteristic of the Catalan language;
        "Catalan poetry"
     n 1: a native or inhabitant of Catalonia
     2: the Romance language spoken in Catalonia in eastern Spain
        (related to Spanish and Occitan)