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A roundish protuberant portion of some part of the body; as, the ball of the thumb; the ball of the foot.

in the 17th century, worked by a form of reaction wheel. The water flows into a vertical tube and gushes from apertures in hollow horizontal arms, causing the machine to revolve on its axis.

It is made in its simplest form by filling a graduated glass tube about 34 inches long with mercury and inverting it in a cup containing mercury. The column of mercury in the tube descends until balanced by the weight of the atmosphere, and its rise or fall under varying conditions is a measure of the change in the atm…

A metallic tube, as of a gun, from which a projectile is discharged. Knight.

lled the liquid barretter, wire is replace by a column of liquid in a very fine capillary tube.

Applied to a protuberance of the base of the sphenoid bone.

To make bell-mouthed; as, to bell a tube.

ion, or by rise and fall of the top, draws in air through a valve and expels it through a tube for various purposes, as blowing fires, ventilating mines, or filling the pipes of an organ with wind. Bellows camera, in photography, a form of camera, which can be drawn out like an accordion or bellows. -- Hydrostatic bel…

A European fish (Centriscus scolopax), distinguished by a long tubular snout, like the pipe of a bellows; -- called also trumpet fish, and snipe fish.

The part of anything which resembles the human belly in protuberance or in cavity; the innermost part; as, the belly of a flask, muscle, sail, ship. Out of the belly of hell cried I. Jonah ii. 2.

A small wooden vessel made of staves and hoops, like a tub. [Prov. Eng.]

A kind of bath tub for sitting baths; a sitz bath.

of American, mostly tropical, climbing shrubs, having compound leaves and showy somewhat tubular flowers. B. capreolata is the cross vine of the Southern United States. The trumpet creeper was formerly considered to be of this genus.

The protuberant part of a cask, which is usually in the middle.

A dioptric telescope, fitted with two tubes joining, so as to enable a person to view an object with both eyes at once; a double- barreled field glass or an opera glass.

(Anat.) Having two bellies or protuberances; as, a biventral, or digastric, muscle, or the biventral lobe of the cerebellum.

A tube, as of cane or reed, sometimes twelve feet long, through which an arrow or other projectile may be impelled by the force of the breath. It is a weapon much used by certain Indians of America and the West Indies; -- called also blowpipe, and blowtube. See Sumpitan.

A tube for directing a jet of air into a fire or into the flame of a lamp or candle, so as to concentrate the heat on some object.

Swollen; protuberant.

fungi having the under side of the pileus or cap composed of a multitude of fine separate tubes. A few are edible, and others very poisonous.