Webster's Revised Unabridged Dictionary · 1913

Overtime

Overtime , noun

1.
Time beyond, or in excess of, a limit; esp., extra working time.
2.
(Sports) An extra period of time provided to play a game, beyond the end of the normal period allowed for the game, for the purpose of resolving a tie score; as, the team won in overtime.
Collocations (1)
sudden death overtime , an overtime{2} in which the first team to score wins the game; -- contrasted with normal overtime{2}, which is a fixed period of time during which either team may score as often as they can.