From Wiktionary, the free dictionary
Back-formation from bummeln.
Bummel m (strong, genitive Bummels, plural Bummel)
- (informal) stroll (often in town)
Declension of Bummel [masculine, strong]
- “Bummel” in Digitales Wörterbuch der deutschen Sprache
- “Bummel” in Uni Leipzig: Wortschatz-Lexikon