tin hat

• Désigne familièrement un casque militaire, en particulier le casque en acier porté par les soldats pour se protéger. S'emploie aussi au sens figuré pour évoquer une attitude défensive ou paranoïaque.

A slang term for a military helmet, especially a steel helmet worn by soldiers for protection. Also used figuratively to mean adopting a defensive or paranoid attitude.

1. Protective helmetB2informalbritish

   A metal helmet, especially a steel helmet worn by soldiers for protection.

   Casque en métal

   • The soldiers put on their tin hats before going into battle.
   • He kept his old tin hat as a souvenir from the war.
   • During the drill, everyone was required to wear a tin hat.

2. Conspiracy theory referenceC1slangbritish

   A metaphorical term for a person who believes in conspiracy theories, often implying paranoia.

   chapeau en aluminium (théorie du complot)

   • He's a bit of a tin hat, always talking about government cover-ups.
   • Don't listen to him; he's wearing his tin hat again.
   • The forum is full of tin hats discussing alien invasions.