Headway (8)
I believe the answer is:
progress
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">headway</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 progress that I've seen before include "Advance - promotion" , "Advancement" , "Breakthrough - advance" , "Mature" , "Get on with" .)