waste gate

American  

noun

Automotive.

1. a valve in a turbocharger unit that automatically opens when a predetermined engine speed is reached, so that some of the exhaust gas to the turbine is diverted and the engine speed does not become excessive.

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Example Sentences

Crying has been called the "waste gate" of the human system; the door of escape to that excess of excitability which sometimes prevails, especially among children and nervous adults.

From The Young Mother Management of Children in Regard to Health by Alcott, William A. (William Andrus)

So he made haste, and, taking a blanket, nailed it at the waste gate of the lower pond, so that the total flood from above went through it: then he turned in.

From The Great Gold Rush A Tale of the Klondike by Jarvis, W. H. P. (William Henry Pope)