cascade in WordNet English dictionary

1. a sudden downpour (as of tears or sparks etc) likened to a rain shower
   "a little shower of rose petals"; "a sudden cascade of sparks"
   shower  cascade 
   
2. a succession of stages or operations or processes or units
   "progressing in severity as though a cascade of genetic damage was occurring"; "separation of isotopes by a cascade of processes"
   cascade 
   
3. a small waterfall or series of small waterfalls
   cascade 
   

1. arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible
   cascade 
   
2. rush down in big quantities, like a cascade
   cascade  cascade down