Definitions:

1. a control consisting of a mechanical device for controlling the flow of a fluid noun
   • If we can turn off the valve soon, we can stop the basement from flooding.
2. a structure in a hollow organ, like the heart, with a flap to insure one-way flow of fluid through it noun
   • One of your heart valves is not functioning properly.

NearBy Words:

• valved
• valvelet