verb
(transitive, derogatory) To divide a geographic area into voting districts in such a way as to give an unfair advantage to one party in an election.
(transitive, derogatory, by extension) To draw dividing lines for other types of districts in an unintuitive way to favor a particular group or for other perceived gain.
(transitive, derogatory, by extension) To change the franchise or voting system in such a way as to give an unfair advantage to one party in an election.
(transitive, derogatory, by extension, chiefly UK and Ireland) To deliberately bring in voters of one's own party or displace voters of another party from a voting district in such a way as to give an unfair advantage to one party in an election.
noun
(derogatory) The act of gerrymandering.
(derogatory) A voting district skewed by gerrymandering.