Source : Webster's Revised Unabridged Dictionary (1913)

Finns \Finns\, n. pl.; sing. {Finn}. (Ethnol.)
   (a) Natives of Finland; Finlanders.
   (b) A branch of the Mongolian race, inhabiting Northern and
       Eastern Europe, including the Magyars, Bulgarians,
       Permians, Lapps, and Finlanders. [Written also {Fins}.]

Finn \Finn\, a.
   A native of Finland; one of the Finn? in the ethnological
   sense. See {Finns}.

Source : WordNet®

Finn
     n : a native or inhabitant of Finland

Source : Free On-Line Dictionary of Computing

finn
     
         To pull rank on somebody based on the amount of
        time one has spent on {IRC}.  The term derives from the fact
        that IRC was originally written in Finland in 1987.
     
        [{Jargon File}]
     
        (2000-08-05)