bustle1
  
  v.
 move in an energetic and busy manner. 
▸
[often as adj. bustling]
 (of a place) be full of activity.
n.
 excited activity and movement.
Etymology
  ME: perh. a var. of obs. buskle, frequentative of busk ‘prepare’, from ON.
 
  
    
bustle2
  
  n.
 historical a pad or frame worn under a skirt to puff it out behind.
Etymology
  C18: of unknown origin.