From Wiktionary, the free dictionary
Middle High German valz, from the root of falzen (“to fold”).
Falz m (strong, genitive Falzes, plural Falze)
- fold
- rabbet, rebate
- seam
- stamp hinge
Declension of Falz [masculine, strong]
- “Falz” in Duden online
- “Falz” in Digitales Wörterbuch der deutschen Sprache