balloon apron

balloon apron

[bə′lün ‚ā·prən]
(ordnance)
An antiaircraft device consisting of cables hanging perpendicularly from other cables extending between two or more balloons.
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References in periodicals archive ?
(A fascinating aerial photograph shows what these defences consisted of: it pictures one of London's seven 'balloon aprons'--a kind of netting, held aloft by barrage balloons.)