barrage balloon - an elongated tethered balloon or blimp with cables or net suspended from it to deter enemy planes that are flying low

sausage balloon, blimp, sausage - a small nonrigid airship used for observation or as a barrage balloon

gondola, car - car suspended from an airship and carrying personnel and cargo and power plant

lighter-than-air craft - aircraft supported by its own buoyancy

Graf Zeppelin, zeppelin - a large rigid dirigible designed to carry passengers or bombs