1. In sports, particularly football/soccer, to prevent the opposing team from scoring by blocking or stopping the ball before it enters the goal
The goalkeeper managed to stop the goal with an excellent save.
O goleiro conseguiu impedir o gol com uma excelente defesa.
2. Metaphorically, to prevent something undesirable from being achieved or accomplished
We need to stop the goal of our competitors before they reach the market.
Precisamos impedir o objetivo de nossos concorrentes antes que eles cheguem ao mercado.