runoff
n. uncountable B2 Upper Intermediate US //ˈɹəˌnɔf// UK //ɹˈʌnɒf// runoff
n. water that flows over the ground instead of soaking into the soil. It often carries dirt or chemicals with it.
n. liquid that flows over the land surface, typically rain or melted snow, rather than infiltrating the ground. In politics and sports, it refers to a final contest between the top candidates or competitors.
Heavy rain caused runoff into the street.
The runoff from the farm carried fertilizer into the river.
After no candidate received a majority in the first round, the election moved to a runoff between the two leading contenders.
Deverbal from run off.