MOULDER Meaning of MOULDER in English v.intr. (US molder) 1 decay to dust. 2 (foll. by away) rot or crumble. 3 deteriorate. [ perh. f. MOULD(3), but cf. Norw. dial. muldra crumble ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012