Hitch, problem (4)
I believe the answer is:
snag
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">hitch</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that snag is a kind of hitch)</span><br/ ><br/ >'<span class="explanation-format__original">problem</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(snag can mean a problem or difficulty)</span><br/ ><br/ ></span>
(Other definitions for snag that I've seen before include "Unexpected difficulty" , "Disadvantage - small hole in fabric" , "Hitch, unexpected problem" , "Jagged projection" , "A hidden obstruction" .)