Source : Webster's Revised Unabridged Dictionary (1913)

Frisian \Fri"sian\, a.
   Of or pertaining to Friesland, a province of the Netherlands;
   Friesic.

Frisian \Fri"sian\, n.
   A native or inhabitant of Friesland; also, the language
   spoken in Friesland. See {Friesic}, n.

Source : WordNet®

Frisian
     n 1: a native or inhabitant of Friesland or Frisia
     2: a West Germanic language spoken in Friesland in the
        northwestern Netherlands; a near relative of English

Frisian
     adj : of or relating to the people or culture or language of
           Friesland or Frisia