1. another place; some other place; somewhere else; outside
2. another (person or thing); other; different; something else; someone else; the rest; et al.
3. beyond (one's expectations, imagination, etc.); outside
esp. 外
4. except; but; other than; apart from
with neg. sentence; as ...ほかに...ない, ...するほかない, etc.
5. besides; in addition to; as well as; on top of
as ...のほか（に）, ...するほか（に）etc.