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."