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A movable tower erected by besiegers for purposes of attack and defense.

es by means of two very minute threads (usually spider lines), one of which, at least, is movable; -- more commonly called a filar micrometer.

A book printed from engraved wooden blocks instead of movable types.

d by shipwrights. -- Bolt and nut, a metallic pin with a head formed upon one end, and a movable piece (the nut) screwed upon a thread cut upon the other end. See B, C, and D, in illust. above.

That part of a carriage, as of a movable battery, or engine, which enables it to turn.

as automatic and machine guns; --used frequently in referring to the method by which the movable barrels of breech- loading shotguns are locked, unlocked, or rotated to loading position.

The movable piece which closes the breech of a breech-loading firearm, and resists the backward force of the discharge. It is withdrawn for the insertion of a cartridge, and closed again before the gun is fired.

A device, usually of metal, consisting of a frame with one more movable tongues or catches, used for fastening things together, as parts of dress or harness, by means of a strap passing through the frame and pierced by the tongue.

A cupboard or set of shelves, either movable or fixed at one side of a room, for the display of plate, china, etc., a sideboard. Not when a gilt buffet's reflected pride Turns you from sound philosophy aside. Pope.

t can be raised or lowered, seats for inside, a separate seat for the driver, and often a movable front, so that it can be used as either an open or a close carriage. The baroness in a calash capable of holding herself, her two children, and her servants. W. Irving.

A curved wedge, movable about an axis, used for forcing or clamping two pieces together.

A wooden lever with a movable iron hook. hear the end; -- used for canting or turning over heavy logs, etc. [U. S.] Bartlett.

A sort of bar or movable nut, attached to the finger board of a guitar or other fretted instrument for the purpose of raising uniformly the pitch of all the strings.

low and fibrous. Capsular ligament (Anat.), a ligamentous bag or capsule surrounding many movable joints in the skeleton.

A movable piece in magazine guns which transfers the cartridge to a position from which it can be thrust into the barrel. Carrier pigeon (Zoöl.), a variety of the domestic pigeon used to convey letters from a distant point to to its home. -- Carrier shell (Zoöl.), a univalve shell of the genus Phorus; -- so called bec…

A movable or sliding keel formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent leeway when the vessel is beating to windward. It is used in vessels of all sizes along the co…

points. Central force (Math.), a force acting upon a body towards or away from a fixed or movable center. -- Center sun (Astron.), a name given to a hypothetical body about which Mädler supposed the solar system together with all the stars in the Milky Way, to be revolving. A point near Alcyone in the Pleiades was sup…

A movable single seat with a back.

A movable parapet, serving to support fascines to cover pioneers. [Obs.]

A traversing base frame, or movable railway, along which the carriage of a barbette or casemate gum moves backward and forward. [See Gun carriage.]