Friesic

from The Century Dictionary.

• Same as Friesian.
• noun The language of the Friesians. Friesic, in its oldest form specifically called Old Friesic, is a Low German dialect formerly spoken in the northern part of Germany in the district which includes the present Friesland. Old Friesic, with Old Saxon and Anglo-Saxon, constituted the main part of what is collectively called Old Low German, of which the present modern Friesic in its local variations, North, East, and West Friesic, and Dutch, Flemish, and Low German in its restricted sense (Platt Deutsch) are the modern continental remains.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to Friesland, a province in the northern part of the Netherlands.
• proper noun The language of the Frisians, a Teutonic people formerly occupying a large part of the coast of Holland and Northwestern Germany. The modern dialects of Friesic are spoken chiefly in the province of Friesland, and on some of the islands near the coast of Germany and Denmark.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun Frisian