1. To take action so that you no longer have something you do not want. English = toss out, get rid of, rid yourself of.
2. To sell something that you no longer want. English = sell off.
3. To get rid of or not accept something because it is not wanted or is not good enough, especially a product because something is wrong with it. English = reject.
4. Of member of a school or organisation, to be told that they are no longer a member, must leave and must not come back because they have behaved badly. English = expel.