Definition of "Outside" :
noun: the outer side or surface of something
noun: the region that is outside of something
adjective: (of a baseball pitch) on the far side of home plate from the batter
"An outside pitch."
adjective: originating or belonging beyond some bounds
"The outside world."
adjective: on or toward an outer edge
"The outside lane."
adjective: leading to or from the outside
"An outside door."
adjective: from or between other countries
"Developing nations need outside help."
adjective: functioning outside the boundaries or precincts of an organized unit
adjective: coming from the outside
"Disdaining outside pressure groups."
adjective: very unlikely
"An outside chance."
adjective: located, suited for, or taking place in the open air
adjective: relating to or being on or near the outer side or limit
"An outside margin."
adverb: outside a building
"In summer we play outside."
adverb: on the outside
"Outside, the box is black."