air cock

noun

1. Machinery. a special type of valve for controlling the flow of air.

Word History and Origins

Origin of air cock¹

First recorded in 1790–1800

Example Sentences

As soon as the water-valve was closed and the air-cock opened, the compressed air blew all of the water out of the tube.

From Project Gutenberg

There is also a valve or air-cock in the steam-chest, under the control of the engineer.

From Project Gutenberg

The device is provided with a pressure gauge and an air cock.

From Project Gutenberg