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# valve

«valve» in Mova's school dictionary: **a part that opens and closes to control how a liquid or…** — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

### part of speech

noun (a valve, valves)

### meaning for a pupil

1) A valve is a part that opens and closes to control how a liquid or gas flows through a pipe or tube. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#m1)

2) In the body, the heart has valves that let blood flow only one way. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#m2)

3) On some brass instruments like the trumpet, valves are buttons that change the note. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#m3)

### sense in the lessons

In science lessons, heart valves stop blood from flowing backwards; the «lub-dub» heartbeat sound is valves closing. In everyday life, a tyre or ball has a valve for pumping air in, and taps work like valves. Phrases: «heart valve», «tyre valve», «safety valve», «open the valve».

### examples

- The heart has four valves. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x1)
- Push the pump onto the valve to blow up the ball. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x2)
- A valve stops the blood from going backwards. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x3)
- The plumber closed the valve to turn off the water. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x4)
- The trumpet has three valves. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x5)
- A safety valve lets out steam if the pressure gets too high. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/#x6)

### note

Countable noun, plural valves. Spelt with -lve. In biology the heart has four valves. A «safety valve» can also mean a way to let out strong feelings safely.

### In the corpora

- [If a pipe bursts, tell a grown-up at once; turning off the stopcock or main water valve stops the flood.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/109-baths-water-and-doors/12/)

### Trees and pragmatics

[Every meaning and example of «valve» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valve/), each sentence with its dependency tree and frames.