1. a device that controls the flow of liquids or gases through a pipe or passage
2. a structure in the heart or blood vessels that prevents blood from flowing backward
Usage: anatomy
3. one of the hinged shells of a mollusk such as a clam or oyster
Usage: biology

1. to control or regulate the flow of something using a valve

Examples

• Turn the valve clockwise to shut off the water supply.
• The plumber replaced the faulty valve in the kitchen sink.
• Heart valve disease can cause serious health problems.
• The mechanic checked all the valves in the car engine.
• She carefully valved the gas flow to maintain proper pressure.
• The old radiator valve was stuck and wouldn’t turn.
• Clam shells consist of two valves connected by a hinge.