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 →

2) In the body, the heart has valves that let blood flow only one way. tree →

3) On some brass instruments like the trumpet, valves are buttons that change the note. tree →

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 →
• Push the pump onto the valve to blow up the ball. tree →
• A valve stops the blood from going backwards. tree →
• The plumber closed the valve to turn off the water. tree →
• The trumpet has three valves. tree →
• A safety valve lets out steam if the pressure gets too high. tree →

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.

Trees and pragmatics

Every meaning and example of «valve» parsed by Mova, each sentence with its dependency tree and frames.