noun
plural -sides
[count] :an inner side, edge, or surface of something - usually singular
a the inside :an inner part of something (such as a building or machine)
[count] informal :the inner parts (such as the heart and stomach) of a person's body - usually plural
on the inside
on the inner side, edge, or surface of something
baseball :on the side of home plate nearest the batter
used to describe how someone is feeling
in a position within an organization or group
in prison
adjective
always used before a noun
located on or near the inner side, edge, or surface of something
coming from someone within a group or organization :relating to or having information that is known only to a special group of people
done by someone within a group or organization
preposition
in or into the inner part of (something or someone)
within the borders or limits of (something)
before the end of (a period of time)
belonging to (a group or organization)
inside of
chiefly US :inside
adverb
in the inner part of something
in or into the inner part of a building, room, etc.
informal :in prison
inside out
so that the inner surface becomes the outer surface
informal :very well and thoroughly
turn (something) inside out
informal
to cause (a place) to become disorganized while you are trying to find something
to change (something) completely