1. To create or leave a vulnerable position that allows someone to attack, criticize, or take advantage
By making such an inconsistent statement, he provided an opening for attack from his opponents.
Ao fazer uma declaração tão inconsistente, ele deu abertura para ataque de seus oponentes.
2. To create a weakness or vulnerability in a defensive position, literally or figuratively
The general's poor positioning provided an opening for attack by the enemy forces.
O posicionamento inadequado do general deu abertura para ataque das forças inimigas.