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.
a protective vest, especially one that is bulletproof.
Words nearby flak jacket
Origin of flak jacket
First recorded in 1955–60
Also called flak vest.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for flak jacket
a reinforced sleeveless jacket for protection against gunfire or shrapnel worn by soldiers, policemen, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012