An Etymological Dictionary of the German Language/Mulm

by Friedrich Kluge

Mulm, m., ‘loose, dry mould, dust,’ first recorded in ModHG., but probably of an earlier origin; allied to the root mal, ‘to grind,’ lit. ‘to pulverise,’ with which Goth. mulda, ‘dust, earth,’ and E. mould are connected; see under Maulwurf. Comp. also Grand.