1 in or into a room, building, container, or something similar: --
3 on or in the inner part of something such as a container or building: --
5 in or into a room, building, container, or something similar: --
Her curiosity got the better of her and she opened the door and peeped inside.
The front door was open so she walked inside and called out, "Hello! Is there anybody in?"
Lakisha sat inside, in fear of her life, until the police came.
The inside of the shed was absolutely covered in cobwebs.
I can't send her a birthday card that has a rude message printed on the inside.
There's a lovely soft furry lining on the inside of this jacket.