Type Word Usage Old Germanic (Hypothetical) Meaning & History Germanic word meaning "goat" [1][2]. Related ItemsFamily Tree·Details Other Languages & Culturesgat(Anglo-Saxon) geiz(Old High German) Surname DescendantsGeisler, Geißler, Geissler, Geiszler(German) Sources & References Kroonen, Guus. Etymological Dictionary of Proto-Germanic. Brill, 2013, page 163. Orel, Vladimir. A Handbook of Germanic Etymology. Brill, 2003, page 123.