Learn how to say Runoffs correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word run-off:
1a further competition, election, race, etc., after a tie or inconclusive result:
he won only 49 per cent of the vote, so a run-off will be held
2 [mass noun] the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc.:
the ratio of run-off to rainfall
fertilizer run-off from the intensively farmed areas in the river basin
the water or other material that drains freely off the surface of something:
when it rains the run-off cascades down to the valley floor
water polluted by run-offs from farmland
3NZ a separate area of land where young animals are kept.