warning pipe

warning pipe

[′wȯrn·iŋ ‚pīp]
(engineering)
An overflow pipe with a conspicuous outlet permitting prompt observation of discharge.

warning pipe

An overlow pipe whose outlet is conspicuous, so that discharge from it can be observed readily.
References in periodicals archive ?
Who may or may not even be there We only have to love each other And the world's future will be set fair If we continue to kill then one dark fateful day Human life could easily cease Because we foolishly refused to obey The warning Pipes of Peace.