barrage balloon

noun

1. a balloon or blimp, usually one of several anchored around a military area, city, etc., from which wires or nets are hung as a protection against attacks from low-flying aircraft.

barrage balloon

noun

1. one of a number of tethered balloons with cables or net suspended from them, used to deter low-flying air attack

Word History and Origins

Origin of barrage balloon¹

First recorded in 1920–25