Pronunciation: (ik-spel'), [key]
—v.t., -pelled, -pel•ling.
1. to drive or force out or away; discharge or eject: to expel air from the lungs; to expel an invader from a country.
2. to cut off from membership or relations: to expel a student from a college.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.