noun
Definition: A device or structure that controls the flow of liquids, gases, or other materials by opening, closing, or obstructing passageways.
Example: The plumber installed a new valve to control the water flow in the pipes.
transitive verb
Definition: To control or provide a mechanism that regulates the flow of a substance, such as gas or liquid, through a pipe or system.
Example: The technician had to valve the system to ensure proper pressure levels.