ɪksˈpel v.tr. (expelled, expelling) (often foll. by from) 1 deprive (a person) of themembership of or involvement in (a school, society, etc.). 2 force out or eject (a thingfromitscontainer etc.). 3 order or force to leave a building etc. øøexpellable adj. expellee n. expellent adj. expeller n. [ME f. L expellere expuls(as EX-(1), pellere drive)]