noun · verb · 15 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈvælv/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ælv
CMU ARPABET:V AE1 L V
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A device that controls the flow of a gas or fluid through a space, such as a pipe, manifold, or plenum.
Definition source: English Wiktionary via Wiktextract
Examples
open the valve
close the valve
shut off the valve
An oil refinery has an impressively vast number and variety of valves.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A device that controls the flow of a gas or fluid through a space, such as a pipe, manifold, or plenum.
Such a device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
Definition source: English Wiktionary via Wiktextract
Examples
Near-synonym: poppet valve
In nearly all internal combustion engines, the valves are of the poppet type.
Meaning relationships
Synonyms: poppet valve
Antonyms: none provided
3
noun
Meaning 3
One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction.
Definition source: English Wiktionary via Wiktextract
Topics: anatomy, medicine, sciences
Examples
the ileocecal valve
the atrioventricular valves
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
One of the leaves of a folding door or of a window sash.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
A vacuum tube.
Definition source: English Wiktionary via Wiktextract
Usage: UK
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
One of the pieces into which certain fruits naturally separate when they dehisce.
Definition source: English Wiktionary via Wiktextract
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
noun
Meaning 7
A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry.
Definition source: English Wiktionary via Wiktextract
Topics: biology, botany, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
noun
Meaning 8
One of the pieces or divisions of bivalve or multivalve shells.
Definition source: English Wiktionary via Wiktextract
Topics: biology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
9
noun
Meaning 9
One of the two similar portions of the shell of a diatom.
Definition source: English Wiktionary via Wiktextract
Topics: biology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
verb
Meaning 10
To control (flow) by means of a valve.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
noun
Meaning 11
one of the paired hinged shells of certain molluscs and of brachiopods
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: shell
12
noun
Meaning 12
the entire one-piece shell of a snail and certain other molluscs
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: shell
13
noun
Meaning 13
control consisting of a mechanical device for controlling the flow of a fluid
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.