plunge /ˈplʌnʤ/
 鑽進,跳進,跳水,跳水池,落下,下跌,投入,盲目投資(vi.)投入,跳進,陷入
 Plunge, n.
 1. The act of thrusting into or submerging; a dive, leap, rush, or pitch into, or as into, water; as, to take the water with a plunge.
 2. Hence, a desperate hazard or act; a state of being submerged or overwhelmed with difficulties. [R.]
    She was brought to that plunge, to conceal her husband's murder or accuse her son.   --Sir P. Sidney.
 And with thou not reach out a friendly arm,
 To raise me from amidst this plunge of sorrows?   --Addison.
 3. The act of pitching or throwing one's self headlong or violently forward, like an unruly horse.
 4. Heavy and reckless betting in horse racing; hazardous speculation. [Cant]
 Plunge bath, an immersion by plunging; also, a large bath in which the bather can wholly immerse himself.
 Plunge battery, or plunging battery Elec., a voltaic battery so arranged that the plates can be plunged into, or withdrawn from, the exciting liquid at pleasure.
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 Plunge v. t. [imp. & p. p. Plunged p. pr. & vb. n. Plunging ]
 1. To thrust into water, or into any substance that is penetrable; to immerse; to cause to penetrate or enter quickly and forcibly; to thrust; as, to plunge the body into water; to plunge a dagger into the breast.  Also used figuratively; as, to plunge a nation into war. “To plunge the boy in pleasing sleep.”
    Bound and plunged him into a cell.   --Tennyson.
    We shall be plunged into perpetual errors.   --I. Watts.
 2. To baptize by immersion.
 3. To entangle; to embarrass; to overcome. [Obs.]
    Plunged and graveled with three lines of Seneca.   --Sir T. Browne.
 Plunge, v. i.
 1. To thrust or cast one's self into water or other fluid; to submerge one's self; to dive, or to rush in; as, he plunged into the river. Also used figuratively; as, to plunge into debt.
    Forced to plunge naked in the raging sea.   --Dryden.
    To plunge into guilt of a murther.   --Tillotson.
 2. To pitch or throw one's self headlong or violently forward, as a horse does.
    Some wild colt, which . . . flings and plunges.   --Bp. Hall.
 3. To bet heavily and with seeming recklessness on a race, or other contest; in an extended sense, to risk large sums in hazardous speculations. [Cant]
 Plunging fire Gun., firing directed upon an enemy from an elevated position.
 plunge
      n 1: a brief swim in water [syn: dip]
      2: a steep and rapid fall
      v 1: thrust or throw into; "Immerse yourself in hot water" [syn:
           immerse]
      2: drop steeply; "the stock market plunged" [syn: dive, plunk]
      3: dash violently or with great speed or impetuosity; "She
         plunged at it eagerly"
      4: begin with vigor; "He launched into a long diatribe"; "She
         plunged into a dangerous adventure" [syn: launch]
      5: cause to be immersed; "The professor plunged his students
         into the study of the Italian text" [syn: immerse]
      6: fall abruptly; "It plunged to the bottom of the well" [syn:
         dump]
      7: immerse briefly into a liquid so as to wet, coat, or
         saturate; "dip the garment into the cleaning solution";
         "dip the brush into the paint" [syn: dunk, dip, souse,
          douse]
      8: engross (oneself) fully; "He immersed himself into his
         studies" [syn: steep, immerse, engulf, engross, absorb,
          soak up]