Definition of: outside

(out′sīd′) noun
1. The external part of a thing; the side or part that forms or adjoins the surface.
2. The part or side that is seen; hence, superficial appearance.
3. The space beyond a bounding line or surface; outer region: opposed to inside.
—at the outside At the farthest, longest, or most, as in an estimate.
—adjective
1. Pertaining to, located on, or restricted to the outside; exterior.
2. Originating or situated beyond designated limits; foreign.
3. Reaching the limit; extreme: an outside estimate.
4. Slight; inconsequential: There is only an outside possibility.
—adverb
1. On or to the outside; externally.
2. Beyond the outside limits of.
3. In the open air; outdoors.
—prep. (out′sīd′)
1. On or to the exterior of: outside the park; outside the box.
2. Beyond the limit of: Don't tell it outside the club.
3. Colloq. Except: No one knows outside yourself.