Definition of gerrymander:
"the superintendent helped gerrymander the school district lines in order to keep the children of the wealthy gated community in the better school all the way across town."
the act of gerrymandering
; a voting district skewed by gerrymandering
"by this iniquitous practice, which is known as the gerrymander, the party in a minority in each State is allowed to get only about one-half or one-quarter of its proper share of representation."