■ verb ( ~s , ~ding , ~ded ) move fast in a straight line because or as if driven by the wind.
■ noun
1》 chiefly literary clouds or spray driven fast by the wind.
↘a driving shower of rain.
↘the action of ~ding.
2》 ( Scud or Scud missile ) a type of long-range surface-to-surface guided missile able to be fired from a mobile launcher.
Origin
C16: perh. an alt. of scut 1 , reflecting the sense 'race like a hare'.