valve

3 definitions • 4 examples

a device that opens and closes to control the flow of liquids or gases, or a similar structure in the heart and the veins that controls the flow of blood:

The valve failed to open/close.

It was a weak heart valve that caused her death.

part of a musical instrument such as a trumpet that changes the sound by controlling the flow of air

a device that controls the flow of air or liquid from one place to another:

a heart valve

The explosion apparently was caused by a faulty gas valve.