Pronunciation: (plā'ôf", -of"), [key]
1. (in competitive sports) the playing of an extra game, rounds, innings, etc., in order to settle a tie.
2. a series of games or matches, as between the leading teams of two leagues, in order to decide a championship: In America the most exciting play-off is the World Series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.