Source : Webster's Revised Unabridged Dictionary (1913)

Speed \Speed\ (sp[=e]d), v. i. [imp. & p. p. {Sped} (sp[e^]d),
   {Speeded}; p. pr. & vb. n. {Speeding}.] [AS. sp[=e]dan, fr.
   sp[=e]d, n.; akin to D. spoeden, G. sich sputen. See {Speed},
   n.]
   1. To go; to fare. [Obs.]

            To warn him now he is too farre sped. --Remedy of
                                                  Love.

   2. To experience in going; to have any condition, good or
      ill; to fare. --Shak.

            Ships heretofore in seas like fishes sped; The
            mightiest still upon the smallest fed. --Waller.

   3. To fare well; to have success; to prosper.

            Save London, and send true lawyers their meed! For
            whoso wants money with them shall not speed!
                                                  --Lydgate.

            I told ye then he should prevail, and speed On his
            bad errand.                           --Milton.

   4. To make haste; to move with celerity.

            I have speeded hither with the very extremest inch
            of possibility.                       --Shak.

   5. To be expedient. [Obs.] --Wyclif (2 Cor. xii. 1.)

Source : WordNet®

speeding
     adj : moving with great speed; "the speeding car"
     n : changing location rapidly [syn: {speed}, {hurrying}]