Dansker is one of the permanent elements of the medieval Teutonic fortified castles. The towers were most often connected with the castle with a covered passage running at the height of the first floor and supported on arcades, called a porch or a gallery. Danskers were built in such a way that all waste from the toilets in them would fall into the moat or the river. Nevertheless, it was important to include them in the castle’s defense system, in some cases they could act as an additional tower protruding from the defense perimeter and supporting the defense of the most vulnerable side. A contentious issue is the etymology of the name of the tower, which can be found in the Proto-Slavic “when” – wet overgrown, the word “Gdanie” meaning a water pool, or in the Prussian “gute” – forest. There are also other linguistic explanations, one of the hypotheses is about the influence of the Prussian language, in which “dansk” was meant to be wet, moist; the second suggests that it is derived from the German verb “dankeren”, that means to remove to the outside.