purge

noun

1.
the act of clearing yourself (or another) from some stigma or charge
purgation purging
Derived from:
purge
2.
an act of removing by cleansing; ridding of sediment or other undesired elements
purging
Derived from:
purge
3.
an abrupt or sudden removal of a person or group from an organization or place
Derived from:
purge