Depths (5)
I believe the answer is:
nadir
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">depths</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 nadir that I've seen before include "Lowest point, or time of deepest depression." , "Drain into the lowest point (5)" , "Point of greatest despair" , "Floor of drain in need of repair" , "Rock bottom" .)