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To be wound or formed into a cylinder or ball; as, the cloth rolls unevenly; the snow rolls well.

One who, or that which, rolls; especially, a cylinder, sometimes grooved, of wood, stone, metal, etc., used in husbandry and the arts.

tary motion, as by means of a connecting rod, a working beam and crank, or an oscillating cylinder.

Having the form of a cylinder; cylindrical; as, the barrel of a musket is round.

Something which rotates about an axis, as a wheel, or the drum of a capstan. "An axis or cylinder having a rundle about it." Bp. Wilkins.

Act or process of expelling the exhaust gases from the cylinder by some special means, as, in many four-cycle engines, by utilizing the momentum of the exhaust gases in a long exhaust pipe.

A long, coarse riddle or sieve, sometimes a revolving perforated cylinder, used to separate the coarser from the finer parts, as of coal, sand, gravel, and the like.

A cylinder, or a cylindrical perforation, having a continuous rib, called the thread, winding round it spirally at a constant inclination, so as to leave a continuous spiral groove, between one turn and the next, -- used chiefly for producing, when revolved, motion or pressure in the direction of its axis, by the slidi…

(Print.) In some cylinder presses, a device with long fingers for freeing the sheet from the cylinder.

r, used in one system of marine-engine governing to connect both ends of the low-pressure cylinder as a supplementary control.

e. -- Side-lever engine, a marine steam engine having a working beam of each side of the cylinder, near the bottom of the engine, communicating motion to a crank that is above them. -- Side pipe (Steam Engine), a steam or exhaust pipe connecting the upper and lower steam chests of the cylinder of a beam engine. -- S…

csimiles of an engraved steel plate by first rolling over it, when hardened, a soft steel cylinder, and then rolling the cylinder, when hardened, over a soft steel plate, which thus becomes a facsimile of the original. The process has been superseded by electrotypy.

applied to a semicylindrical pipe used as a sliding valve. In the illustration, a is the cylinder of a steam engine, in which plays the piston p; b the steam chest, receiving its supply from the pipe i, and containing the slide valve s, which is shown as admitting steam to one end of the cylinder through the port e, a…

from Snift. Snifting valve, a small valve opening into the atmosphere from the cylinder or condenser of a steam engine, to allow the escape of air when the piston makes a stroke; -- so called from the noise made by its action.

, or with the fingers encompassing the object; as, to span a space or distance; to span a cylinder. My right hand hath spanned the heavens. Isa. xiviii. 13.

In internal-combustion engines with electric ignition, a plug, screwed into the cylinder head, having through it an insulated wire which is connected with the induction coil or magneto circuit on the outside, and forms, with another terminal on the base of the plug, a spark gap inside the cylinder.

Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical.

A mop for cleaning the bore of a cannon after a discharge. It consists of a cylinder of wood, covered with sheepskin with the wool on, or cloth with a heavy looped nap, and having a handle, or staff.

A piece of cane or red with a knot at each end, or a hollow cylinder of wood with a ridge at each end, used to wind thread or yarn upon. Spool stand, an article holding spools of thread, turning on pins, -- used by women at their work.

A little pipe, or hollow cylinder of paper, filled with powder or combustible matter, to be thrown into the air while burning, so as to burst there with a crack. Lampoons, like squibs, may make a present blaze. Waller. The making and selling of fireworks, and squibs . . . is punishable. Blackstone.