1. In boxing, a judgment awarded to a boxer when the fight goes the distance and one fighter is deemed to have won based on points
The champion retained his title by winning decision in the 12-round bout.
O campeão manteve seu título por decisão vitoriosa na luta de 12 rounds.
2. More broadly, a decision or ruling that results in victory for one party
The court's winning decision for the plaintiff set an important legal precedent.
A decisão vitoriosa da corte para o autor estabeleceu um precedente legal importante.