safety bolt

• Dispositivo mecânico, geralmente uma barra metálica deslizante ou ferrolho, usado para travar uma porta, portão ou janela na posição fechada e impedir a entrada não autorizada.

A mechanical device, typically a sliding metal bar or latch, used to secure a door, gate, or window in a closed position to prevent unauthorized entry.

1. Locking mechanismB1formal

   A metal bolt or bar that slides into a strike plate to secure a door or window, often used as an additional security measure.

   Ferrolho de segurança

   • He slid the safety bolt across the door before going to bed.
   • The window has a safety bolt to prevent it from being opened from the outside.
   • Always check that the safety bolt is engaged when leaving the house.

2. Firearm safety deviceB2formal

   A component on a firearm that prevents accidental discharge by blocking the trigger or firing mechanism.

   Trava de segurança

   • Before cleaning the gun, ensure the safety bolt is engaged.
   • The safety bolt on the rifle was stuck, so he took it to a gunsmith.
   • He disengaged the safety bolt before firing.