Source : Webster's Revised Unabridged Dictionary (1913)

Scud \Scud\, v. i. [imp. & p. p. {Scudded}; p. pr. & vb. n.
   {Scudding}.] [Dan. skyde to shoot, shove, push, akin to skud
   shot, gunshot, a shoot, young bough, and to E. shoot.
   [root]159. See {Shoot}.]
   1. To move swiftly; especially, to move as if driven forward
      by something.

            The first nautilus that scudded upon the glassy
            surface of warm primeval oceans.      --I. Taylor.

            The wind was high; the vast white clouds scudded
            over the blue heaven.                 --Beaconsfield.

   2. (Naut.) To be driven swiftly, or to run, before a gale,
      with little or no sail spread.

Source : WordNet®

scudding
     n : the act of moving along swiftly (as before a gale) [syn: {scud}]

scud
     n : the act of moving along swiftly (as before a gale) [syn: {scudding}]
     v 1: run or move very quickly or hastily; "She dashed into the
          yard" [syn: {dart}, {dash}, {scoot}, {flash}, {shoot}]
     2: run before a gale [syn: {rack}]
     [also: {scudding}, {scudded}]

scudding
     See {scud}