1. To block or impede the opening of the goal in soccer/football, preventing the ball from entering
The defender was penalized for obstructing the goal with his body.
O defensor foi punido por obstruir o gol com seu corpo.
2. To hinder or prevent someone from achieving their objective or target
We must not obstruct the goal of the peace negotiations.
Não devemos obstruir o objetivo das negociações de paz.