smooth something ↔ out phrasal verb ( see also ↑ smooth )
1 . to make something such as paper or cloth flat by moving your hands across it:
They smoothed out the map on the table.
Smooth out all the wrinkles.
2 . to make something happen in an even regular way:
Sometimes central banks intervene to smooth out price fluctuations.
3 . to get rid of problems or difficulties