ˌsudden ˈdeath BrE AmE noun [uncountable]
a way of deciding the winner of a game when the scores are equal at the end. The game goes on until one player or team gains the lead:
a sudden death play-off
SUDDEN DEATH
Meaning of SUDDEN DEATH in English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012