Part 266

Wane, n. (Forestry) The natural curvature of a log or of the edge of a board sawed from a log.

Warp, v. t. (Aëronautics) To twist the end surfaces of (an aërocurve in an aëroplane) in order to restore or maintain equilibrium.

Warp knitting. A kind of knitting in which a number of threads are interchained each with one or more contiguous threads on either side.

Wart"y-back`, n. An American fresh- water mussel (Quadrula pustulosa). Its shell is used in making buttons.

Wash, v. t. 1. To cause dephosphorisation of (molten pig iron) by adding substances containing iron oxide, and sometimes manganese oxide.

2. To pass (a gas or gaseous mixture) through or over a liquid for the purpose of purifying it, esp. by removing soluble constituents.

Wash, v. i. 1. To use washes, as for the face or hair.

2. To move with a lapping or swashing sound, or the like; to lap; splash; as, to hear the water washing.

Wash, n. 1. [Western U. S.] (Geol.) (a) Gravel and other rock débris transported and deposited by running water; coarse alluvium. (b) An alluvial cone formed by a stream at the base of a mountain.

2. The dry bed of an intermittent stream, sometimes at the bottom of a cañon; as, the Amargosa wash, Diamond wash; -- called also dry wash. [Western U. S.]

3. (Arch.) The upper surface of a member or material when given a slope to shed water. Hence, a structure or receptacle shaped so as to receive and carry off water, as a carriage wash in a stable.

Wash drawing. (Art) In water-color painting, work in, or a work done chiefly in, washes, as distinguished from that done in stipple, in body color, etc.

Washed sale. Same as Wash sale.

Wash"ing, n. 1. (Mining) Gold dust procured by washing; also, a place where this is done; a washery.

2. A thin covering or coat; as, a washing of silver.

3. (Stock Exchanges) The operation of simultaneously buying and selling the same stock for the purpose of manipulating the market. The transaction is fictitious, and is prohibited by stock-exchange rules.

4. (Pottery) The covering of a piece with an infusible powder, which prevents it from sticking to its supports, while receiving the glaze.

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Wash"oe proc`ess (?). [From the Washoe district, Nevada.] The process of treating silver ores by grinding in pans or tubs with the addition of mercury, and sometimes of chemicals such as blue vitriol and salt.

Wash sale. (Stock Exchange) A sale made in washing. See Washing, n., 3, above.

Wash stand. In a stable or garage, a place in the floor prepared so that carriages or automobiles may be washed there and the water run off.

Waste, n. (Phys. Geog.) Material derived by mechanical and chemical erosion from the land, carried by streams to the sea.

Watch meeting. A religious meeting held in the closing hours of the year.

Wa"ter*course` (?), n. (Shipbuilding) One of the holes in floor or other plates to permit water to flow through.

Water glass. 1. A clepsydra.

2. An instrument consisting of an open box or tube with a glass bottom, used for examining objects in the water, as upon the sea bottom in shallow places.

3. A water gauge for a steam boiler.

Water grass. (a) A tall march perennial grass (Paspalum dilatatum) of the southern United States and the American tropics. (b) Manna grass. (c) The grass Chloris elegans. (d) [Dial. Eng.] (1) Velvet grass. (2) The water cress. (3) One of various horsetails.