nutshell
nounUK /ˈnʌt.ʃel/
US /ˈnʌt.ʃel/
The hard shell that covers a nut.
She cracked open the nutshell to get the nut inside.
OTHER MEANINGS
2. A very short way of saying something.
In a nutshell, the trip was fun.
3. A small, compact container or space.
The boat was a nutshell compared to the big ship.
4. A summary or brief statement.
Give me the nutshell version of the story.