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A band of leather, or other flexible substance, passing around two wheels, and communicating motion from one to the other.

The inner or principal room in a hut or house of two rooms; -- opposed to but, the outer apartment. [Scot.]

The name of two plants (Sesamum orientale and S. indicum), originally Asiatic; -- also called oil plant. From their seeds an oil is expressed, called benne oil, used mostly for making soap. In the southern United States the seeds are used in candy.

That which is laid, staked, or pledged, as between two parties, upon the event of a contest or any contingent issue; the act of giving such a pledge; a wager. "Having made his bets." Goldsmith.

To put trappings on; to clothe; to deck. After them followed two other chariots covered with red satin, and the horses betrapped with the same. Stow.

Used in expressing motion from one body or place to another; from one to another of two. If things should go so between them. Bacon.

In the space which separates; between. From betwixt two aged oaks. Milton.

An instrument consisting of two rules or arms, jointed together at one end, and opening to any angle, for adjusting the surfaces of work to the same or a given inclination; -- called also a bevel square. Gwilt.

A kind of gear in which the two wheels working together lie in different planes, and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.

The replacement of an edge by two similar planes, equally inclined to the including faces or adjacent planes.

In most branches of science bi- in composition denotes two, twice, or doubly; as, bidentate, two-toothed; biternate, doubly ternate, etc.

Having two hydrogen atoms which can be replaced by negative atoms or radicals to form salts; -- said of bases. See Diacid.

Having points in two directions.

Having two angles or corners.

Having two anthers.

Having two auricles, as the heart of mammals, birds, and reptiles.

Having two axes; as, biaxial polarization. Brewster. -- Bi*ax"i*al*ly, adv.

Furnished with, or having, two bracts.

Having two spurs, as the wing or leg of a bird.

Having two callosities or hard spots. Gray.