ˈground ˌlevel BrE AmE noun [uncountable]
the same level as the surface of the earth, rather than above it or below it:
The flats are set around a courtyard with shops at ground level.
ˈground ˌlevel BrE AmE noun [uncountable]
the same level as the surface of the earth, rather than above it or below it:
The flats are set around a courtyard with shops at ground level.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012