toplevel
adjectiveUK /ˌtɒpˈlɛvəl/
US /ˌtɑːpˈlɛvəl/
The highest or most important level of something.
Only the toplevel managers attended the secret meeting.
OTHER MEANINGS
2. In computing, the main or outermost level of a program or file system.
The toplevel folder contains all the project files.
3. Belonging to the highest social or professional rank.
She competed at the toplevel of the sport.
4. A floor or deck that is the highest in a building or ship.
The restaurant is on the toplevel of the hotel.