English version

barrage balloon in Air topic

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 balloonCider 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.