Evulsion (noun)
The action of forcibly pulling something out.
Avulsion (noun)
The loss or separation of a body part, either by surgery or due to trauma
Avulsion (noun)
An abrupt change in the course of a river, typically from one channel to another
Avulsion (noun)
Movement of soil during a flood, or during a change in the course of a river, especially when a resulting change of land ownership is involved
Wiktionary