(1):

(v. t.) To drive or force out from that within which anything is contained, inclosed, or situated; to eject; as to expel air from a bellows.

(2):

(v. t.) To cut off from further connection with an institution of learning, a society, and the like; as, to expel a student or member.

(3):

(v. t.) To keep out, off, or away; to exclude.

(4):

(v. t.) To discharge; to shoot.

(5):

(v. t.) To drive away from one's country; to banish.