D defs.my
Entry 2 senses Webster, 1913

Overtime

/ōv'-ẽrt-īmˌ/ · O·ver·time · IPA /ˈoʊ.vɚˌtaɪm/
01 n. Time beyond, or in excess of, a limit; esp., extra working time.
  1. 1.
    Time beyond, or in excess of, a limit; esp., extra working time.
  2. 2.
    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.(Sports)
Phrases & compounds
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.