Meaning of the word nutshell in English

What does nutshell mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

nutshell

US /ˈnʌt.ʃel/
UK /ˈnʌt.ʃel/

Noun

the shell of a nut

Example:
The squirrel cracked open the nutshell to get to the kernel.
The ground was littered with broken nutshells.

Phrase

in a very brief and concise form

Example:
To put it in a nutshell, the project failed.
Can you explain the whole situation in a nutshell?