Twente ( , Tweants dialect: "Tweante") is a region in the eastern Netherlands. It encompasses the most urbanised and easternmost part of the province of Overijssel. Twente is most likely named after the Tuihanti or Tvihanti, a Germanic tribe that settled in the area and was mentioned by the Roman historian Tacitus. The region's borders are defined by the Overijssel region of Salland in the northwest and west (the river Regge roughly defines the western border), the German County of Bentheim in the northeast and east (the river Dinkel roughly defines the eastern border) and the Gelderland region of the Achterhoek in the south.