n.
Function: transitive verb
Inflected Form: -dered ; -der · ing \ -d( ə -)ri ŋ \
Date: 1812
1 : to divide (a territorial unit) into election districts to give one political party an electoral majority in a large number of districts while concentrating the voting strength of the opposition in as few districts as possible
2 : to divide (an area) into political units to give special advantages to one group < gerrymander a school district>