Decanting (7)
I believe the answer is:
pouring
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">decanting</span>' is the definition.<br/ ><span class="explanation-format__explanation">('pour' can be a synonym of 'decant')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pouring that I've seen before include "Raining heavily" , "falling a lot" .)