n.
<美> (=roorback) 在选举前为中伤敌政而作的诽谤性谣言

Roorback \Roor"back\, Roorbach \Roor"bach\, n.
A defamatory forgery or falsehood published for purposes of
political intrigue. [U.S.]

Note: The word originated in the election canvass of 1844,
when such a forgery was published, to the detriment of
James K. Polk, a candidate for President, purporting to
be an extract from the ``Travels of Baron Roorbach.''