Water conduit (4)
I believe the answer is:
pipe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">water conduit</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 pipe that I've seen before include "Hollow tube or musical instrument" , "Water carrier" , "two hogsheads of wine" , "Wine cask; sing shrilly" , "Means of conveying" .)