(1):
(conj.) Unless; if it be not so that.
(2):
(v. i.) To take exception; to object; - usually followed by to, sometimes by against; as, to except to a witness or his testimony.
(3):
(prep.) With exclusion of; leaving or left out; excepting.
(4):
(v. t.) To take or leave out (anything) from a number or a whole as not belonging to it; to exclude; to omit.
(5):
(v. t.) To object to; to protest against.