Motorist (6)
I believe the answer is:
driver
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">motorist</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 driver that I've seen before include "chauffeuse" , "Operator of a motor vehicle" , "See 1 down" , "Golf club; chauffeur" , "Golf-club for a motorist" .)