barrage balloon[bə räz̸h′, -räj′]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
any of a number of anchored balloons with cables or nets attached for entangling low-flying attacking airplanes
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A balloon anchored singly or in a series over a military objective to support nets that hinder the passage of enemy aircraft.