Muller

Origin

From mull (“to mix (clay and sand) under a roller to prepare a mould”) + -er (suffix forming agent nouns). Mull is possibly derived from mull (“(chiefly Northern England) to grind to powder, crumble, powder, pulverize”), from Middle English mollen, mullen (“to moisten (something); to soften (something) by making wet; to become liquid; to drizzle; to crumble or soften (something) by grinding; to fondle or pet (something)”), from Old French moillier, muillier (“to make wet”) (modern French mouiller), and from its etymon Vulgar Latin *molliāre, *mulliāre (“to make wet”), from Latin molliāre, the present active infinitive of molliō (“to soften”), from Latin mollis (“soft”) (ultimately from Proto-Indo-European *(s)meld- (“to melt; to soften”) or *melh₂- (“to crush, grind”)) + -iō (suffix forming factitive verbs from adjectives).