Pronunciation: (run'ôf", -of"),[key] —n. 1. something that drains or flows off, as rain that flows off from the land in streams.
2. a final contest held to determine a victor after earlier contests have eliminated the weaker contestants.
3. a deciding final contest held after one in which there has been no decisive victor, as between two contestants who have tied for first place.
4. Also called rundown. a continual or prolonged reduction, esp. in quantity or supply: a runoff in bank deposits; a sharp runoff in business inventories. 5. Stock Exchange.the final prices appearing on the ticker after the closing bell is rung for the trading day.