top-level folder
nounUK /ˌtɒp ˈlɛvəl ˈfəʊldə/
US /ˌtɑːp ˈlɛvəl ˈfoʊldər/
The main folder that holds all the other folders inside it.
Save your pictures in the top-level folder so you can find them easily.
OTHER MEANINGS
2. The highest folder in a computer's storage structure, from which all others branch out.
The top-level folder of the drive contains three subfolders.
3. A main category in an organized system that contains smaller groups.
In our project, the top-level folder is called 'Work'.
4. The first folder you see when you open a storage location.
Click the top-level folder to see everything inside.