High German

Short definition from Wiktionary

Noun

1. 1
   A native or inhabitant of the southern highlands of Germany; a High German speaker.
2. 2
   Any of a group of West Germanic languages or dialects spoken in the southern highlands of Germany.
3. 3
   The standard variety of High German as spoken and written throughout the German language area.

Adjective

1. 1
   From or pertaining to the southern region of Germany; speaking High German.
2. 2
   Written or spoken in High German; pertaining to High German.