Stepping (8)
I believe the answer is:
treading
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stepping</span>' is the definition.<br/ ><span class="explanation-format__explanation">('tread' can be a synonym of 'step')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for treading that I've seen before include "Putting one's foot down" , "Pressing the foot down, on grapes say" , "Stepping around red giant" , "Crushing (grapes) by foot" , "walking" .)