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Hasil cari dari kata atau frase: Diamond drill (0.00773 detik)
Found 1 items, similar to Diamond drill.
English → English (gcide) Definition: Diamond drill Diamond \Di"a*mond\ (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See Adamant, Tame.] 1. A precious stone or gem excelling in brilliancy and beautiful play of prismatic colors, and remarkable for extreme hardness. [1913 Webster] Note: The diamond is native carbon in isometric crystals, often octahedrons with rounded edges. It is usually colorless, but some are yellow, green, blue, and even black. It is the hardest substance known. The diamond as found in nature (called a rough diamond) is cut, for use in jewelry, into various forms with many reflecting faces, or facets, by which its brilliancy is much increased. See Brilliant, Rose. Diamonds are said to be of the first water when very transparent, and of the second or third water as the transparency decreases. [1913 Webster] 2. A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge. [1913 Webster] 3. One of a suit of playing cards, stamped with the figure of a diamond. [1913 Webster] 4. (Arch.) A pointed projection, like a four-sided pyramid, used for ornament in lines or groups. [1913 Webster] 5. (Baseball) The infield; the square space, 90 feet on a side, having the bases at its angles. [1913 Webster] 6. (Print.) The smallest kind of type in English printing, except that called brilliant, which is seldom seen. [1913 Webster] Note: [hand] This line is printed in the type called Diamond. [1913 Webster] Black diamond, coal; (Min.) See Carbonado. Bristol diamond. See Bristol stone, under Bristol. Diamond beetle (Zo["o]l.), a large South American weevil (Entimus imperialis), remarkable for its splendid luster and colors, due to minute brilliant scales. Diamond bird (Zo["o]l.), a small Australian bird (Pardalotus punctatus, family Ampelid[ae].). It is black, with white spots. Diamond drill (Engin.), a rod or tube the end of which is set with black diamonds; -- used for perforating hard substances, esp. for boring in rock. Diamond finch (Zo["o]l.), a small Australian sparrow, often kept in a cage. Its sides are black, with conspicuous white spots, and the rump is bright carmine. Diamond groove (Iron Working), a groove of V-section in a roll. Diamond mortar (Chem.), a small steel mortar used for pulverizing hard substances. Diamond-point tool, a cutting tool whose point is diamond-shaped. Diamond snake (Zo["o]l.), a harmless snake of Australia (Morelia spilotes); the carpet snake. Glazier's diamond, a small diamond set in a glazier's tool, for cutting glass. [1913 Webster] Drill \Drill\, n. 1. An instrument with an edged or pointed end used for making holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press. [1913 Webster] 2. (Mil.) The act or exercise of training soldiers in the military art, as in the manual of arms, in the execution of evolutions, and the like; hence, diligent and strict instruction and exercise in the rudiments and methods of any business; a kind or method of military exercises; as, infantry drill; battalion drill; artillery drill. [1913 Webster] 3. Any exercise, physical or mental, enforced with regularity and by constant repetition; as, a severe drill in Latin grammar. [1913 Webster] 4. (Zo["o]l.) A marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. The most destructive kind is Urosalpinx cinerea . [1913 Webster] Bow drill, Breast drill. See under Bow, Breast. Cotter drill, or Traverse drill, a machine tool for drilling slots. Diamond drill. See under Diamond. Drill jig. See under Jig. Drill pin, the pin in a lock which enters the hollow stem of the key. Drill sergeant (Mil.), a noncommissioned officer whose office it is to instruct soldiers as to their duties, and to train them to military exercises and evolutions. Vertical drill, a drill press. [1913 Webster]

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