(1):
(adv. & conj.) Besides; except that mentioned; in addition; as, nowhere else; no one else.
(2):
(adv. & conj.) Otherwise; in the other, or the contrary, case; if the facts were different.
(3):
(a. & pron.) Other; one or something beside; as, Who else is coming? What else shall I give? Do you expect anything else?