inside

US /ˈɪn.saɪd/
UK /ˈɪn.saɪd/
"inside" picture
1.

the inner side or surface of something

:
The inside of the box was empty.
She painted the inside of the house a light blue.
1.

in or into the interior of a place or thing

:
Please step inside.
The cat is hiding inside the cupboard.
1.

situated on or in the inner side

:
The inside lane is for faster traffic.
He had an inside view of the company's operations.
1.

on the inner side of

:
The treasure is hidden inside the cave.
He kept the secret deep inside his heart.