ouster

Short definition from Wiktionary

Noun

1. 1
   A putting out of possession; dispossession; ejection.
2. 2
   Action by a cotenant that prevents another cotenant from enjoying the use of jointly owned property.
3. 3
   The forceful removal of a politician or regime from power; a coup; an ousting.
4. 4
   Someone who ousts.

Verb

1. 1
   To oust.