The Collaborative International Dictionary of English v.0.48:

Dash \Dash\ (d[a^]sh), 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.
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            If you dash a stone against a stone in the botton of
            the water, it maketh a sound.         --Bacon.
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   2. To break, as by throwing or by collision; to shatter; to
      crust; to frustrate; to ruin.
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            Thou shalt dash them in pieces like a potter's
            vessel.                               --Ps. ii. 9.
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            A brave vessel, . . .
            Dashed all to pieces.                 --Shak.
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            To perplex and dash
            Maturest counsels.                    --Milton.
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   3. To put to shame; to confound; to confuse; to abash; to
      depress. --South.
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            Dash the proud gamester in his gilded car. --Pope.
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   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.
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            I take care to dash the character with such
            particular circumstance as may prevent ill-natured
            applications.                         --Addison.
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            The very source and fount of day
            Is dashed with wandering isles of night. --Tennyson.
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   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.
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   6. To erase by a stroke; to strike out; knock out; -- with
      out; as, to dash out a word.
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The Collaborative International Dictionary of English v.0.48:

Dash \Dash\, v. i.
   To rush with violence; to move impetuously; to strike
   violently; as, the waves dash upon rocks.
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         [He] dashed through thick and thin.      --Dryden.
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         On each hand the gushing waters play,
         And down the rough cascade all dashing fall. --Thomson.
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The Collaborative International Dictionary of English v.0.48:

Dash \Dash\, n.
   1. Violent striking together of two bodies; collision; crash.
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   2. A sudden check; abashment; frustration; ruin; as, his
      hopes received a dash.
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   3. A slight admixture, infusion, or adulteration; a partial
      overspreading; as, wine with a dash of water; red with a
      dash of purple.
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            Innocence when it has in it a dash of folly.
                                                  --Addison.
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   4. A rapid movement, esp. one of short duration; a quick
      stroke or blow; a sudden onset or rush; as, a bold dash at
      the enemy; a dash of rain.
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            She takes upon her bravely at first dash. --Shak.
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   5. Energy in style or action; animation; spirit.
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   6. A vain show; a blustering parade; a flourish; as, to make
      or cut a great dash. [Low]
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   7. (Punctuation) A mark or line [--], in writing or printing,
      denoting a sudden break, stop, or transition in a
      sentence, or an abrupt change in its construction, a long
      or significant pause, or an unexpected or epigrammatic
      turn of sentiment. Dashes are also sometimes used instead
      of marks or parenthesis. --John Wilson.
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   8. (Mus.)
      (a) The sign of staccato, a small mark [?] denoting that
          the note over which it is placed is to be performed in
          a short, distinct manner.
      (b) The line drawn through a figure in the thorough bass,
          as a direction to raise the interval a semitone.
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   9. (Racing) A short, spirited effort or trial of speed upon a
      race course; -- used in horse racing, when a single trial
      constitutes the race.
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WordNet (r) 3.0 (2006):

dash
    n 1: distinctive and stylish elegance; "he wooed her with the
         confident dash of a cavalry officer" [syn: dash, elan,
         flair, panache, style]
    2: a quick run [syn: dash, sprint]
    3: a footrace run at top speed; "he is preparing for the
       100-yard dash"
    4: a punctuation mark (-) used between parts of a compound word
       or between the syllables of a word when the word is divided
       at the end of a line of text [syn: hyphen, dash]
    5: the longer of the two telegraphic signals used in Morse code
       [syn: dash, dah]
    6: the act of moving with great haste; "he made a dash for the
       door" [syn: dash, bolt]
    v 1: run or move very quickly or hastily; "She dashed into the
         yard" [syn: dart, dash, scoot, scud, flash,
         shoot]
    2: break into pieces, as by striking or knocking over; "Smash a
       plate" [syn: smash, dash]
    3: hurl or thrust violently; "He dashed the plate against the
       wall"; "Waves were dashing against the rock" [syn: crash,
       dash]
    4: destroy or break; "dashed ambitions and hopes"
    5: cause to lose courage; "dashed by the refusal" [syn: daunt,
       dash, scare off, pall, frighten off, scare away,
       frighten away, scare]
    6: add an enlivening or altering element to; "blue paint dashed
       with white"