adj.
 1.relating to or being within or near the inner side or limit
 2.being or applying to the inside of a building
 3.located, suited for, or taking place within a building
 4.confined to an exclusive group
 5.away from the outer edge
 6.within some bounds inside adv.
 1.within a building
 2.on the inside
 3.with respect to private feelings
 4.in reality inside n.
 1.the region that is inside of something
 2.the inner or enclosed surface of something 
 
Idiom of the Day
a case of mistaken identity 
an incorrect identification of someone
It was a case of mistaken identity when the police arrested the wrong person.