Rains hard (5)
I believe the answer is:
teems
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rains hard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for teems that I've seen before include "Abounds, swarms" , "Pours down" , "Rains heavily" , "Buckets down" .)