1630s, from German plündern, from Middle High German plunderen "to plunder," originally "to take away household furniture," from plunder (n.) "household goods, clothes," also "lumber, baggage" (14c.; cf. Modern German Plunder "lumber, trash"), which is related to Middle Dutch plunder "household goods;" Frisian and Dutch plunje "clothes." A word acquired by English via the Thirty Years War and applied in native use after the outbreak of the English Civil War in 1642. Related: Plundered; plundering. Plunderbund was a U.S. colloquial word from 1914 referring to "a corrupt alliance of corporate and financial interests," with German Bund "alliance, league."