runoffnoun
us/ˈrʌnˌɔf/runoff noun (ELECTION)
[ C ] a second or final election held when no one got enough votes to win an earlier election
runoff noun (LIQUID)
[ U ] earth science water that flows away from high areas to low areas:
Houses and subdivisions can disturb spring water runoff from the mountains.
[ U ] earth science Runoff is also chemicals and animal excrement that flow into rivers and lakes and pollute the environment:
Stormwater runoff is a major source of water pollution.