runoff > define

noun

• The occurrence of surplus liquid (as water) exceeding the limit or capacity.
  • synonyms: overflow, overspill
• A final election to resolve an earlier election that did not produce a winner. .

Runoff is used for listed equity securities. Series of trades printed on the ticker tape that occur on the NYSE before 4: 00 p. M., but are not reported until afterwards due to heavy trading that makes the tape late.