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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Diamond drill — 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 …   The Collaborative International Dictionary of English

  • diamond drill — noun : a usually annular drill faced with bort diamonds and used for rock boring * * * a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples. [1820 30] * * * diamond drill, a drill or borer which… …   Useful english dictionary

  • diamond-drill — diˈamond drill noun A borer whose bit is set with bort • • • Main Entry: ↑diamond …   Useful english dictionary

  • diamond drill — a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples. [1820 30] * * * …   Universalium

  • diamond drill — rotary drill set with black diamonds at its end (used for perforating and boring in rock) …   English contemporary dictionary

  • diamond drill — /ˈdaɪmənd drɪl/ (say duymuhnd dril) noun a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples for geological or mineralogical examination …   Australian English dictionary

  • 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 …   The Collaborative International Dictionary of English

  • Drill jig — 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 …   The Collaborative International Dictionary of English

  • Drill pin — 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 …   The Collaborative International Dictionary of English

  • Drill sergeant — 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 …   The Collaborative International Dictionary of English

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