noun
valve
VALV/vælv/
A structure that controls the flow of liquid or gas.
The valve controls water flowing through the pipe.
Etymology
A valva was a section of a folding door. That door image was applied to bodily folds regulating fluid flow, then to mechanical devices performing the same function.
In context
the check valve is a device that allows air to flow in one direction only
More examples
- She closed the valve before removing the hose.
- A damaged heart valve affected blood flow.
- The instrument has three valves.
Forms
valve · valves
Similar words
- tap
- A controllable outlet, usually operated by a person.
- stopcock
- A particular valve used to stop flow.