valve
nouns
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
is a part of
the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
"he stood still, his heart thumping wildly"
is a type of (narrower)
a particular complex anatomical part of a living thing
"he has good bone structure"
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
is derived from
is a part of
a wind instrument that consists of a brass tube (usually of variable length) that is blown by means of a cup-shaped or funnel-shaped mouthpiece
is a type of (narrower)
an instrumentality invented for a particular purpose
"the device is small enough to wear on your wrist"; "a device intended to conserve water"
control consisting of a mechanical device for controlling the flow of a fluid
is a type of (narrower)
a mechanism that controls the operation of a machine
"the speed controller on his turntable was not working properly"; "I turned the controls over to her"
the entire one-piece shell of a snail and certain other molluscs
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