Valve

/vælv/

Meaning & Definition

noun

A device that regulates the flow of a fluid (liquid or gas) through a passage or a system.

The plumber installed a new valve to control the water supply to the sink.

A structure in a biological system that opens and closes to control flow, such as in the heart.

The doctor explained how the heart's valves prevent backflow of blood.

A mechanical device for controlling the flow of a substance, such as in engines or pneumatic systems.

The valve in the engine regulates the intake of air and fuel for combustion.

A part of a mechanism that opens or closes to control the flow of materials.

The safety valve lifted to release pressure from the steam boiler.

Middle English, from Old French 'valve', from Latin 'valva' meaning 'a leaf, a folding door'.

check valve

A valve that allows fluid to flow in one direction only.

pressure valve

A safety device that releases excess pressure in a system.

ball valve

A valve that regulates flow using a spherical disc.

valve seat

The surface on which a valve closes to stop flow.

faucet

A device for drawing liquid from a pipe or cask.

regulator

A device that maintains a constant pressure or flow.

piston

A cylindrical part that moves up and down to create pressure.

To be stuck or unable to proceed.

I'm so valve right now, I can't move until I finish this project.

To release or vent frustration.

He really had to valve after that stressful meeting.