Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “valve”


noun [C]    /vælv/
a device that controls the flow of air or liquid from one place to another: a heart valve The explosion apparently was caused by a faulty gas valve.
(Definition of valve noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of valve

More American English definitions for “valve”

Definitions of “valve” in other dictionaries

Word of the Day


the skill or activity of preparing and cooking food

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More