Really come down
I believe the answer is:
pour
'really come down' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pour that I've seen before include "Pelt - decant" , "to drop, when it's heavy" , "Cause to flow as from pot to cup" , "Cause to flow in a stream" , "Give out liquid" .)