n. One who bores or pierces.n. A tool or instrument used for boring; an auger; specifically, in Great Britain, a drill, an implement used in boring holes in rock.n. A name common to many minute coleopterous insects of the group Xylophaga, whose larvæ eat their way into old wood, forming at the bottom of the holes a little cocoon, whence they emerge as small beetles.n. Some other insect which bores, either in the larval or adult state.n. A local English name of the glutinous hag, Myxine glutinosa. See cut under hag.n. A bivalve mollusk which bores into wood or stone, especially one of the family Pholadidœ.n. In entomology, the terebra or ovipositor when it is used for boring, as in many beetles, flies, etc.n. A marine snail, as Urosalpinx cinerca: so named because of its habit of boring through the shells of oysters and other mollusks.n. The larva of the American buprestid beetle, Chrysobothris femorata (which see, with cut); the flat-headed apple-tree borer.n. The larva of a crambid moth, Diatræa saccharalis, which bores in sugar-cane in the West Indies and the southern United States, where it is also known as the larger corn-stalk borer.n. A scolytid beetle, Xyleborus perforans.n. The larva of the sugarcane weevil, a calandrid beetle, Sphenophorus obscurus, common in the islands of the Pacific.