barrel roll | a roll in which the plane follows a spiral course |
valve | one of the paired hinged shells of certain molluscs and of brachiopods |
valve | the entire one-piece shell of a snail and certain other molluscs |
accelerator throttle throttle valve | a valve that regulates the supply of fuel to the engine |
a ashcan trash can garbage can wastebin ash bin ash-bin ashbin dustbin trash barrel trash bin | a bin that holds rubbish until it is collected |
ball valve | any valve that checks flow by the seating of a ball |
barrel cask | a cylindrical container that holds liquids |
barrel gun barrel | a tube through which a bullet travels when a gun is fired |
barrel knot blood knot | a knot used for tying fishing leaders together, the ends of the two leaders are wrapped around each other two or three times |
barrel organ grind organ hand organ hurdy gurdy hurdy-gurdy street organ | a musical instrument that makes music by rotation of a cylinder studded with pegs |
barrel vault | the simplest form of vault, a single continuous arch |
beer barrel beer keg | a barrel that holds beer |
breech rear of barrel rear of tube | opening in the rear of the barrel of a gun where bullets can be loaded |
butterfly valve | a valve in a carburetor that consists of a disc that turns and acts as a throttle |
clack valve clack clapper valve | a simple valve with a hinge on one side, allows fluid to flow in only one direction |
diode rectifying tube rectifying valve | a thermionic tube having two electrodes, used as a rectifier |
exhaust valve | a valve through which burned gases from a cylinder escape into the exhaust manifold |
heart valve | an implant that replaces a natural cardiac valve |
intake valve | a valve that controls the flow of fluid through an intake |
pickle barrel | a barrel holding vinegar in which cucumbers are pickled |
poppet poppet valve | a mushroom-shaped valve that rises perpendicularly from its seat, commonly used in internalombustion engines |
rain barrel | a barrel used as a cistern to hold rainwater |
rocker arm valve rocker | a lever pivoted at the center, used especially to push a valve down in an internalombustion engine |
safety valve relief valve escape valve escape cock escape | a valve in a container in which pressure can build up (as a steam boiler), it opens automatically when the pressure reaches a dangerous level |
slide valve | valve that opens and closes a passageway by sliding over a port |
sluicegate sluice valve floodgate penstock head gate water gate | regulator consisting of a valve or gate that controls the rate of water flow through a sluice |
tube vacuum tube thermionic vacuum tube thermionic tube electron tube thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
valve | control consisting of a mechanical device for controlling the flow of a fluid |
valve | device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone |
valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
wine cask wine barrel | a barrel that holds wine |
mitral valve bicuspid valve left atrioventricular valve | valve with two cusps, situated between the left atrium and the left ventricle |
tricuspid valve right atrioventricular valve | valve with three cusps, situated between the right atrium and the right ventricle, allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts |
atrioventricular valve | either of two heart valves through which blood flows from the atria to the ventricles, prevents return of blood to the atrium |
aortic valve | a semilunar valve between the left ventricle and the aorta, prevents blood from flowing from the aorta back into the heart |
pulmonary valve | a semilunar valve between the right ventricle and the pulmonary artery, prevents blood from flowing from the artery back into the heart |
semilunar valve | a heart valve with cusps shaped like half-moons, prevents blood from flowing back into the heart |
heart valve cardiac valve | a valve to control one-way flow of blood |
valve | a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it |
ileocecal valve | valve between the ileum of the small intestine and the cecum of the large intestine, prevents material from flowing back from the large to the small intestine |
pyloric sphincter pyloric valve musculus sphincter pylori | the sphincter muscle of the pylorus that separates the stomach from the duodenum |
cooper barrel maker | a craftsman who makes or repairs wooden barrels or tubs |
echinocactus barrel cactus | any cactus of the genus Echinocactus, strongly ribbed and very spiny, southwestern United States to Brazil |
golden barrel cactus Echinocactus grusonii | large cactus of east central Mexico having golden to pale yellow flowers and spines |
barrel cactus | a cactus of the genus Ferocactus: unbranched barrel-shaped cactus having deep ribs with numerous spines and usually large funnel-shaped flowers followed by dry fruits |
pork barrel pork | a legislative appropriation designed to ingratiate legislators with their constituents |
barrel bbl | any of various units of capacity, a barrel of beer is gallons and a barrel of oil is gallons |
barrel barrelful | the quantity that a barrel (of any size) will hold |
barrel drum | a bulging cylindrical shape, hollow with flat ends |
mitral valve prolapse | cardiopathy resulting from the mitral valve not regulating the flow of blood between the left atrium and left ventricle of the heart |