n. An arthropod of the order Araneæ, Araneina, or Araneida (the old Linnean genus Aranea), of the class Arachnida, of which there are many families, hundreds of genera, and thousands of species, found all over the world.n. Some other arachnidan, resembling or mistaken for a spider; a spider-mite. See red-spider.n. A spider-crab; a sea-spider.n. A cooking-utensil having legs or feet to keep it from contact with the coals: named from a fancied resemblance to the insect—the ordinary frying-pan is, however, sometimes erroneously termed a spider.n. A trivet; a low tripod used to support a dish, or the like, in front of a fire.n. In machinery:n. A skeleton of radiating spokes, as a rag-wheel.n. The internal frame or skeleton of a gear-wheel, for instance, on which a cogged rim may be bolted, shrunk, or cast.n. The solid interior part of a piston, to which the packing is attached, and to whose axis the piston-rod is secured.n. Nautical, an iron outrigger to keep a block clear of the ship's side.n. In the English form of pyramid-pool billiards, a skeleton rest, or bridge, designed for certain exigencies.n. In archery, a prize for the best gold, awarded at the Grand National Archery meeting in England.