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nerally with fleshy leaves and flowers of a yellow or whitish yellow color, of the genus Zygophyllum.

The knotgrass (Polygonum aviculare).

An herbaceous plant of the genus Polygonum, section Bistorta; snakeweed; adderwort. Its root is used in medicine as an astringent.

A tool of steel, generally tapering, and of a polygonal form, with from four to eight cutting edges, for smoothing or enlarging holes in metal; sometimes made smooth or without edges, as for burnishing pivot holes in watches; a reamer. The broach for gun barrels is commonly square and without taper.…

A plant (Fagopyrum esculentum) of the Polygonum family, the seed of which is used for food.

A genus of herbaceous plants (Tribulus) of the order Zygophylleæ, having a hard several-celled fruit, armed with stout spines, and resembling the military instrument of the same name. The species grow in warm countries, and are often very annoying to cattle.

g angles; as, a six canted bolt head; a canted window. Canted column (Arch.), a column polygonal in plan.

A weed with a sterm of many joints (Illecebrum verticillatum); also, the Polygonum aviculare or knotgrass.

The extreme end of the chancel or choir; properly the round or polygonal part.

A term applied to various columnlike parts; as, the columnella, or epipterygoid bone, in the skull of many lizards; the columella of the ear, the bony or cartilaginous rod connecting the tympanic membrane with the internal ear.

A kind of pillar; a cylindrical or polygonal support for a roof, ceiling, statue, etc., somewhat ornamented, and usually composed of base, shaft, and capital. See Order.

A weed that binds stalks of corn, as Convolvulus arvensis, Polygonum Convolvulus. [Prov. Eng.]

Smartweed (Polygonum Hydropiper).

A figure or polygon bounded by twelve sides and containing twelve angles.

ely come from swine keeping, from eating draff and husks. Shak. The draff and offal of a bygone age. Buckle. Mere chaff and draff, much better burnt. Tennyson.

of which the shaft of a column is composed; also, a vertical wall, whether circular or polygonal in plan, carrying a cupola or dome. (e) (Mach.)

A polygon or plane figure with nine sides and nine angles; a nonagon.

Having all the sides equal; as, an equilateral triangle; an equilateral polygon. Equilateral hyperbola (Geom.), one whose axes are equal. -- Equilateral shell (Zoöl.), one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts. -- Mutually e…

kingdom. Exterior angle (Geom.), the angle included between any side of a triangle or polygon and the prolongation of the adjacent side; also, an angle included between a line crossing two parallel lines and either of the latter on the outside. -- Exterior side (Fort.), the side of the polygon upon which a front of f…

A genus of fossil corals abundant in the Silurian and Devonian rocks, having polygonal cells with perforated walls.