rotating drill
1drill — drill1 drillable, adj. drillability, n. driller, n. /dril/, n. 1. Mach., Building Trades. a. a shaftlike tool with two or more cutting edges for making holes in firm materials, esp. by rotation. b. a tool, esp. a hand tool, for holding and… …
2Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry …
3Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… …
4Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… …
5drill press — a drilling machine having a single vertical spindle. [1860 65, Amer.] * * * or drilling machine Machine tool for producing holes in hard substances. The drill is held in a rotating spindle and is fed into the workpiece, which is usually clamped… …
6Drill bushing — A drill bushing, also known as a jig bushing,[1] is a tool used in metalworking jigs to guide cutting tools, most commonly drill bits. Other tools that are commonly used in a drill bushing include counterbores, countersinks, and reamers. They are …
7drill — 1. verb /dɹɪɫ/ a) To create (a hole) by removing material with a drill [tool]. Drill a small hole to start the screw in the right direction. b) To practice, especially in a military context. They drilled daily to learn the routine exactly. 2.… …
8drill — drill1 noun 1》 a tool or machine with a rotating or reciprocating cutting tip, used for boring holes. 2》 training in military exercises. ↘instruction by means of repeated exercises. ↘(the drill) informal the correct or recognized… …
9drill — 1. To make a hole in bone or other hard substance. 2. An instrument for making or enlarging a hole in bone or in a tooth. [Middle Dutch drillen, to bore] bur d. bur. dental d. a rotary power driven instrument into which cutting points may be… …
10drill pipe — noun or drill rod : a pipe or rod that drives a rotary drill bit (as in drilling wells) * * * (in oil well drilling or the like) any of several coupled tubes for rotating the bit and supplying drilling mud. * * * drill pipe, a pipe for driving a… …
