From Middle High German knouf, from Old High German knouf, from Proto-Germanic *knaupaz. Cognate with Dutch knoop. Also related with German Knopf, Dutch knop and further with German Knubbel, Dutch knobbel, English knob.
- Though generally understood, the word is rare in some regions, including western Germany. Knopf or Türknopf is used instead.
Declension of Knauf
- Knauf in Duden online