An Etymological Dictionary of the German Language/Rummel
Rummel, m., ‘rumble, din, lumber, lump,’ ModHG. only, from LG. rummel, ‘heap’ Du. rommelen, ‘to tumble,’ rommelzo, ‘medley’; see rumpeln. In the sense of ‘noise’ ModHG. Rummel is connected with Du. rommelen, ‘to rattle, roar, drink (of beasts),’ to which OIc. rymja, ‘to roar, make a noise,’ must be related.