bottom falls out phrase2 •Something fails, collapses, or enters a state of disarray.But in the last four months, the bottom has fallen out of the job market, officials say. — 1991 •It is raining heavily, as (or as if) the clouds are dumping all their moisture.To start with, it rained every day as if the bottom would fall out. When morning came the sky would be clear, but around noon it would start raining and rain until midnight. — 1928
