flak jacket

noun

1. U.S. Air Force.,  an armored garment made of steel plates covered by a padded fabric, designed to protect vital parts of the body from shrapnel.

2. a protective vest, especially one that is bulletproof.

flak jacket

noun

1. a reinforced sleeveless jacket for protection against gunfire or shrapnel worn by soldiers, policemen, etc

Word History and Origins

Origin of flak jacket¹

First recorded in 1955–60