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5 definitions found
 for machine gun
From The Collaborative International Dictionary of English v.0.48 :

  Gun \Gun\ (g[u^]n), n. [OE. gonne, gunne; of uncertain origin;
     cf. Ir., Gael., & LL. gunna, W. gum; possibly (like cannon)
     fr. L. canna reed, tube; or abbreviated fr. OF. mangonnel, E.
     mangonel, a machine for hurling stones.]
     1. A weapon which throws or propels a missile to a distance;
        any firearm or instrument for throwing projectiles,
        consisting of a tube or barrel closed at one end, in which
        the projectile is placed, with an explosive charge (such
        as guncotton or gunpowder) behind, which is ignited by
        various means. Pistols, rifles, carbines, muskets, and
        fowling pieces are smaller guns, for hand use, and are
        called small arms. Larger guns are called cannon,
        ordnance, fieldpieces, carronades, howitzers, etc.
        See these terms in the Vocabulary.
        [1913 Webster]
              As swift as a pellet out of a gunne
              When fire is in the powder runne.     --Chaucer.
        [1913 Webster]
              The word gun was in use in England for an engine to
              cast a thing from a man long before there was any
              gunpowder found out.                  --Selden.
        [1913 Webster]
     2. (Mil.) A piece of heavy ordnance; in a restricted sense, a
        [1913 Webster]
     3. pl. (Naut.) Violent blasts of wind.
        [1913 Webster]
     Note: Guns are classified, according to their construction or
           manner of loading as rifled or smoothbore,
           breech-loading or muzzle-loading, cast or
           built-up guns; or according to their use, as field,
           mountain, prairie, seacoast, and siege guns.
           [1913 Webster]
     Armstrong gun, a wrought iron breech-loading cannon named
        after its English inventor, Sir William Armstrong.
     Big gun or Great gun, a piece of heavy ordnance; hence
        (Fig.), a person superior in any way; as, bring in the big
        guns to tackle the problem.
     Gun barrel, the barrel or tube of a gun.
     Gun carriage, the carriage on which a gun is mounted or
     Gun cotton (Chem.), a general name for a series of
        explosive nitric ethers of cellulose, obtained by steeping
        cotton in nitric and sulphuric acids. Although there are
        formed substances containing nitric acid radicals, yet the
        results exactly resemble ordinary cotton in appearance. It
        burns without ash, with explosion if confined, but quietly
        and harmlessly if free and open, and in small quantity.
        Specifically, the lower nitrates of cellulose which are
        insoluble in ether and alcohol in distinction from the
        highest (pyroxylin) which is soluble. See Pyroxylin, and
        cf. Xyloidin. The gun cottons are used for blasting and
        somewhat in gunnery: for making celluloid when compounded
        with camphor; and the soluble variety (pyroxylin) for
        making collodion. See Celluloid, and Collodion. Gun
        cotton is frequenty but improperly called
        nitrocellulose. It is not a nitro compound, but an ester
        of nitric acid.
     Gun deck. See under Deck.
     Gun fire, the time at which the morning or the evening gun
        is fired.
     Gun metal, a bronze, ordinarily composed of nine parts of
        copper and one of tin, used for cannon, etc. The name is
        also given to certain strong mixtures of cast iron.
     Gun port (Naut.), an opening in a ship through which a
        cannon's muzzle is run out for firing.
     Gun tackle (Naut.), the blocks and pulleys affixed to the
        side of a ship, by which a gun carriage is run to and from
        the gun port.
     Gun tackle purchase (Naut.), a tackle composed of two
        single blocks and a fall. --Totten.
     Krupp gun, a wrought steel breech-loading cannon, named
        after its German inventor, Herr Krupp.
     Machine gun, a breech-loading gun or a group of such guns,
        mounted on a carriage or other holder, and having a
        reservoir containing cartridges which are loaded into the
        gun or guns and fired in rapid succession. In earlier
        models, such as the Gatling gun, the cartridges were
        loaded by machinery operated by turning a crank. In modern
        versions the loading of cartidges is accomplished by
        levers operated by the recoil of the explosion driving the
        bullet, or by the pressure of gas within the barrel.
        Several hundred shots can be fired in a minute by such
        weapons, with accurate aim. The Gatling gun, Gardner
        gun, Hotchkiss gun, and Nordenfelt gun, named for
        their inventors, and the French mitrailleuse, are
        machine guns.
     To blow great guns (Naut.), to blow a gale. See Gun, n.,
        [1913 Webster +PJC]

From The Collaborative International Dictionary of English v.0.48 :

  Machine \Ma*chine"\ (m[.a]*sh[=e]n"), n. [F., fr. L. machina
     machine, engine, device, trick, Gr. mhchanh`, from mh^chos
     means, expedient. Cf. Mechanic.]
     1. In general, any combination of bodies so connected that
        their relative motions are constrained, and by means of
        which force and motion may be transmitted and modified, as
        a screw and its nut, or a lever arranged to turn about a
        fulcrum or a pulley about its pivot, etc.; especially, a
        construction, more or less complex, consisting of a
        combination of moving parts, or simple mechanical
        elements, as wheels, levers, cams, etc., with their
        supports and connecting framework, calculated to
        constitute a prime mover, or to receive force and motion
        from a prime mover or from another machine, and transmit,
        modify, and apply them to the production of some desired
        mechanical effect or work, as weaving by a loom, or the
        excitation of electricity by an electrical machine.
        [1913 Webster]
     Note: The term machine is most commonly applied to such
           pieces of mechanism as are used in the industrial arts,
           for mechanically shaping, dressing, and combining
           materials for various purposes, as in the manufacture
           of cloth, etc. Where the effect is chemical, or other
           than mechanical, the contrivance is usually denominated
           an apparatus or device, not a machine; as, a bleaching
           apparatus. Many large, powerful, or specially important
           pieces of mechanism are called engines; as, a steam
           engine, fire engine, graduating engine, etc. Although
           there is no well-settled distinction between the terms
           engine and machine among practical men, there is a
           tendency to restrict the application of the former to
           contrivances in which the operating part is not
           distinct from the motor.
           [1913 Webster]
     2. Any mechanical contrivance, as the wooden horse with which
        the Greeks entered Troy; a coach; a bicycle. --Dryden.
        --Southey. --Thackeray.
        [1913 Webster]
     3. A person who acts mechanically or at the will of another.
        [1913 Webster]
     4. A combination of persons acting together for a common
        purpose, with the agencies which they use; as, the social
        [1913 Webster]
              The whole machine of government ought not to bear
              upon the people with a weight so heavy and
              oppressive.                           --Landor.
        [1913 Webster]
     5. A political organization arranged and controlled by one or
        more leaders for selfish, private or partisan ends; the
        Tammany machine. [Political Cant]
        [1913 Webster]
     6. Supernatural agency in a poem, or a superhuman being
        introduced to perform some exploit. --Addison.
        [1913 Webster]
     Elementary machine, a name sometimes given to one of the
        simple mechanical powers. See under Mechanical.
     Infernal machine. See under Infernal.
     Machine gun.See under Gun.
     Machine screw, a screw or bolt adapted for screwing into
        metal, in distinction from one which is designed
        especially to be screwed into wood.
     Machine shop, a workshop where machines are made, or where
        metal is shaped by cutting, filing, turning, etc.
     Machine tool, a machine for cutting or shaping wood, metal,
        etc., by means of a tool; especially, a machine, as a
        lathe, planer, drilling machine, etc., designed for a more
        or less general use in a machine shop, in distinction from
        a machine for producing a special article as in
     Machine twist, silken thread especially adapted for use in
        a sewing machine.
     Machine work, work done by a machine, in contradistinction
        to that done by hand labor.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  machine gun \machine gun\ n.
     A fully automatic rapid-firing rifle, which continues to fire
     bullets repeatedly as long as the trigger is depressed;
     lighter versions may be carried in the hands, and heavier
     versions may be mounted on a tripod, vehicle, or other mount.
     The lighweight versions are sometimes called a submachine
     [PJC] machine-gun

From The Collaborative International Dictionary of English v.0.48 :

  machine-gun \machine-gun\, machine gun \machine gun\a.
     Occurring in rapid succession, like the firing of a machine
     gun; as, Tom was a persuasive speaker, with a smooth deep
     voice, polysyllabic vocabulary, and a machine-gun
     articulation that overwhelmed listeners.
     Syn: rapid-fire.

From WordNet (r) 3.0 (2006) :

  machine gun
      n 1: a rapidly firing automatic gun (often mounted)
      v 1: shoot with a machine gun

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