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"
a small waterfall or series of small waterfalls
arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible
lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking; "She always digresses when telling a story"; "her mind wanders"; "Don't digress when you give a lecture"