transcription, транскрипция: [ vælv ]
( valves)
1.
A valve is a device attached to a pipe or a tube which controls the flow of air or liquid through the pipe or tube.
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2.
A valve is a small piece of tissue in your heart or in a vein which controls the flow of blood and keeps it flowing in one direction only.
He also has problems with a heart valve.
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3.
see also safety valve