Devil window
As Devil window or Höllenfenster a long sleeve section of which is Gothic called, that caused the dress in the sleeve area remained front and rear part, only a hand-wide strip and the view of the lateral lacing released. It developed between around 1320 and 1345 and was particularly popular with the Surcot .
Web links
Commons : Devil's Window - collection of images, videos and audio files
Wiktionary: Devil's Window - explanations of meanings, word origins, synonyms, translations