runoff
nounUK /ˈrʌnɒf/
US /ˈrʌnɔːf/
Water that flows over the ground when it rains.
After the storm, runoff from the hills filled the stream.
OTHER MEANINGS
2. A final election or vote to decide between the top candidates.
The two leaders will face a runoff next month.
3. The extra amount of something that is produced beyond what is needed.
The factory's runoff of chemicals was carefully monitored.
4. The act of running off or away.
The runoff of customers to cheaper stores worried the owner.