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Possible definitions for wadding
carding
In yarn production, a process of separating individual fibers and causing many of them to lie parallel, and also removing most of the remaining impurities. Cotton, wool, waste silk, and man-made staple are subjected to carding. Carding produces a thin sheet of uniform thickness that is then condensed to form a thick, continuous, untwisted strand called sliver. When very fine yarns are desired, carding is followed by combing, a process that removes short fibers, leaving a sliver composed entirely of long fibers, all laid parallel, and both smoother and more lustrous than uncombed types. Carded and combed sliver is then spun.
walking
In track and field, a form of racing in which the competitor's advancing foot must touch the ground before the rear foot leaves it. Walking as a sport dates from the later 19th cent. Walking races of 10 mi and 3,500 m were added to the men's Olympic program in 1908, but since 1956 the Olympic distances have been 20 km and 50 km. A women's 10-km walk was introduced in 1992.
waxwing
Any of three species (family Bombycillidae) of elegant-looking songbirds named for shiny red beads on the tips of the secondary wing feathers. All species are gray-brown and have a tapering crest. The common, or Bohemian, waxwing (Bombycilla garrulus) is 8 in. (20 cm) long and has yellow, white, and red wing markings. It breeds in N forests of Eurasia and America. The cedar waxwing (B. cedrorum), smaller and less colorful, breeds in Canada and the N U.S. Flocks of waxwings may invade city parks and gardens in winter, searching for berries. The Japanese waxwing (B. japonica) is restricted to NE Asia.
welding
Technique for joining metallic parts, usually through the application of heat. Discovered in the 1st millennium AD during attempts to manipulate iron into useful shapes, the technique produced a strong, tough blade. Welding traditionally involved interlayering relatively soft and tough iron with high-carbon material, followed by hammer forging. Modern welding processes include gas welding, arc welding, and resistance welding. More recently, electron-beam welding, laser welding, and several solid-phase processes such as diffusion bonding, friction welding, and ultrasonic joining have been developed. See also brazing, soldering.
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