Short trip to perform a task (6)
I believe the answer is:
errand
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">short trip to perform a task</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 errand that I've seen before include "Job usually involving a short trip" , "A little job" , "Short journey on behalf of another" , "Mission usually for others" , "Mission (usually run!)" .)