molder (n.) Look up molder at Dictionary.com
also moulder, mid-15c., "one who molds or forms," agent noun from mold (v.). From late 13c. as a surname.
molder (v.) Look up molder at Dictionary.com
also moulder, "to crumble away," 1530s, probably frequentative based on mold (n.3) "loose earth." Related: Moldered; moldering.