Hurdle (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hurdle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for obstacle that I've seen before include "Thing that obstructs progress" , "The problem" , "It obstructs or hinders" , "Block to progress" , "Thing blocking progress" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hurdle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>