gun drill boring
1Drill 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 …
2drill — 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… …
3drill — I. /drɪl / (say dril) noun 1. a tool or machine for making cylindrical holes, especially by rotation. 2. Military a. training in formal marching or other precise military or naval movements. b. an exercise in such training: gun drill. 3. any… …
4Drill — 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… …
5drill — I. verb Etymology: Dutch drillen Date: 1619 transitive verb 1. a. to fix something in the mind or habit pattern of by repetitive instruction < drill pupils in spelling > b. to impart or communicate by repetition < impossible to drill the simplest …
6drill — 1. n. & v. n. 1 a pointed, esp. revolving, steel tool or machine used for boring cylindrical holes, sinking wells, etc. 2 a esp. Mil. instruction or training in military exercises. b rigorous discipline or methodical instruction, esp. when… …
7Boring — Bore Bore, v. t. [imp. & p. p. {Bored}; p. pr. & vb. n. {Boring}.] [OE. borien, AS. borian; akin to Icel. bora, Dan. bore, D. boren, OHG. por?n, G. bohren, L. forare, Gr. ? to plow, Zend bar. [root]91.] 1. To perforate or penetrate, as a solid… …
8boring — Ⅰ. bore [1] ► VERB 1) make (a hole) in something with a drill or other tool. 2) hollow out (a gun barrel or other tube). ► NOUN 1) the hollow part inside a gun barrel or other tube. 2) the diameter of this: a small bore rifle …
9boring — bor·ing || bÉ”Ërɪŋ adj. not interesting, dull bÉ”Ë n. hole; diameter, caliber; cylindrical hollow (gun barrel, etc.); surge of water v. drill a hole; advance, progress; cause boredom, make weary …
10Drilling — For other uses, see Drilling (disambiguation). Drilling is a cutting process that uses a drill bit to cut or enlarge a hole in solid materials. The drill bit is a multipoint, end cutting tool. It cuts by applying pressure and rotation to the… …