Boring one (4)
I believe the answer is:
drip
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">boring one</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for drip that I've seen before include "Weed - seep" , "Fall in small blobs" , "Fall or let fall in drops" , "Means of intravenous feeding" , "Splash - softie" .)