surface
CEFR: B1
The outermost boundary, upper layer, or above-ground physical exterior of an area or building; or to rise to the top.
Synonyms
- exterior
- superficies
- ground level
Common Collocations
- road surface
- on the surface
- scratch the surface
Example Sentence
Subterranean metro lines alleviate vehicular congestion on surface arterial streets.