From Longman Dictionary of Contemporary Englisha fight to the death/finisha fight to the death/finishFIGHTa fight that continues until one side is completely defeated → fight
Examples from the Corpus
a fight to the death/finish• And if there's not enough advertising to go round, it could be a fight to the death.• It will be a fight to the finish.• Six teams are bitter rivals in what will be a fight to the finish.• By 1807 politics had become a fight to the death between the two factions.• Usually if two gray angels of nearly equal size are placed together a fight to the death ensues.• Some say 1972 was a fight to the death, which left Jacklin as the slain gladiator. 