expel in WordNet English dictionary

1. remove from a position or office
   "The chairman was ousted after he misappropriated funds"
   oust  throw out  drum out  boot out  kick out  expel 
   
2. eliminate (a substance)
   "combustion products are exhausted in the engine"; "the plant releases a gas"
   exhaust  discharge  expel  eject  release 
   
3. cause to flee
   "rout out the fighters from their caves"
   rout  rout out  expel 
   
4. force to leave or move out
   "He was expelled from his native country"
   expel  throw out  kick out