Source : Webster's Revised Unabridged Dictionary (1913)

Dash \Dash\, v. t. [imp. & p. p. {Dashed}; p. pr. & vb. n.
   {Dashing}.] [Of. Scand. origin; cf. Dan daske to beat,
   strike, Sw. & Icel. daska, Dan. & Sw. dask blow.]
   1. To throw with violence or haste; to cause to strike
      violently or hastily; -- often used with against.

            If you dash a stone against a stone in the botton of
            the water, it maketh a sound.         --Bacon.

   2. To break, as by throwing or by collision; to shatter; to
      crust; to frustrate; to ruin.

            Thou shalt dash them in pieces like a potter's
            vessel.                               --Ps. ii. 9.

            A brave vessel, . . . Dashed all to pieces. --Shak.

            To perplex and dash Maturest counsels. --Milton.

   3. To put to shame; to confound; to confuse; to abash; to
      depress. --South.

            Dash the proud games?er in his gilded car. --Pope.

   4. To throw in or on in a rapid, careless manner; to mix,
      reduce, or adulterate, by throwing in something of an
      inferior quality; to overspread partially; to bespatter;
      to touch here and there; as, to dash wine with water; to
      dash paint upon a picture.

            I take care to dash the character with such
            particular circumstance as may prevent ill-natured
            applications.                         --Addison.

            The very source and fount of day Is dashed with
            wandering isles of night.             --Tennyson.

   5. To form or sketch rapidly or carelessly; to execute
      rapidly, or with careless haste; -- with off; as, to dash
      off a review or sermon.

   6. To erase by a stroke; to strike out; knock out; -- with
      out; as, to dash out a word.

Dashing \Dash"ing\, a.
   Bold; spirited; showy.

         The dashing and daring spirit is preferable to the
         listless.                                --T. Campbell.

Source : WordNet®

dashing
     adj 1: lively and spirited; "a dashing hero" [syn: {gallant}]
     2: marked by smartness in dress and manners; "a dapper young
        man"; "a jaunty red hat" [syn: {dapper}, {jaunty}, {natty},
         {raffish}, {rakish}, {smart}, {spiffy}, {snappy}, {spruce}]