Rush, outpouring (5)
I believe the answer is:
spate
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">rush</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that rush can be written as spate)</span><br/ ><br/ >'<span class="explanation-format__original">outpouring</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I have seen 'Fast outpouring ' mean 'spate' so perhaps 'outpouring' could also mean 'spate')</span><br/ ><br/ ></span>
(Other definitions for spate that I've seen before include "Sudden increased quantity" , "Sudden river flood" , "A sudden flood or rush" , "rash" , "Fast outpouring" .)