mainnerve
nounUK /ˈmeɪn nɜːv/
US /ˈmeɪn nɜrv/
The main nerve is the biggest nerve in a part of your body.
The doctor said the main nerve in his arm was hurt.
OTHER MEANINGS
2. The most important path that carries messages in a system.
The main nerve of the network keeps all the computers talking.
3. The key person or thing that keeps a group working.
She is the main nerve of our team.
4. The central support of a plan or idea.
Trust is the main nerve of a good friendship.