It may be slippery
I believe the answer is:
slope
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">it may be slippery</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 slope that I've seen before include "Poles for gradient" , "Be inclined" , "A rise, possibly" , "decamp" , "Slant" .)