boring (boring)

[Verbal n. of borel, v.] 1. The act of piercing or perforating; specifi cally, in mining wing similar operations, ar act of making a hole in rock or earth earth by by means of a borer or drill. This is often executed on a large scale by the aid of machinery. Wells and shafts several feet in diameter are now bored without blasting, as has been done in Paris in sinking artesian wells, in the great northern coal-fields of France and Belgium, and elsewhere. 2. The hole made by boring. Holes of small depth bored with the drill for blasting are called bore - holes. Deep holes bored for any purpose are called borings, if of large diameter shafts or wells, according as they are intended for use in mining or for supplying water. 3. pl. The chips, fragments, or dust produced in boring. Also called boring - dust.-Three handed boring, in mining, boring in which a hand-drill is operated by three men, one of whom holds the drill and turns it as the work proceeds, while the others alternately strike upon or beat it with a heavy hammer or sledge. When one man holds the drill and another beats it, the boring is two - handed; when the same person holds the drill one beats it with the other, it is single-handed. [Eng.]