topfolder
nounUK /ˈtɒpˌfəʊldə/
US /ˈtɑːpˌfoʊldər/
The main folder that holds all the other folders inside it.
Open the topfolder to see all your project files.
OTHER MEANINGS
2. The highest-level directory in a computer file system.
The system stores logs in the topfolder of the drive.
3. A folder placed at the very top of a stack or pile.
She grabbed the topfolder from the stack on her desk.
4. The leading or most important folder in an organized collection.
Each client gets a topfolder named after them.