From Longman Dictionary of Contemporary Englishbarrage balloonˈbarrage balˌloon / $ .ˈ..ˌ./ noun [countable] PMWTTAa large bag that floats in the air to prevent enemy planes from flying near the ground
Examples from the Corpus
barrage balloon• Cider and Guinness had given him a barrage balloon for a stomach.• Through his window, Carrington could see a silver barrage balloon, rising slowly on its cable into the clear blue sky.• The winch man was running out the cable, allowing the barrage balloon to rise. 