There are multiple definitions - click on the translation that matches your context.

撤销

动词

full

reverse

verb

Definitions of reverse

English

to change to an opposite position, process or way of doing something

Sadly it is not always possible to reverse the wrongs of a previous administration.

English

to say officially that a judgment, sentence, or decree etc made by a lower court or authority no longer has effect

The decision was reversed on appeal.