Get to the bottom of (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">get to the bottom of</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fathom that I've seen before include "Measure of depth, 6 ft." , "Six-foot measure" , "Nautical measure of six feet" , "Six feet in depth; grasp" , "Nautical measure of depth" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">get to the bottom of</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 unravel that I've seen before include "Straighten out" , "Disentangle knitted wool or solve mystery" , "Become undone" , "Unpick, untangle" , "Solve the problem" .)