Pulverised (6)
I believe the answer is:
ground
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pulverised</span>' is the definition.<br/ ><span class="explanation-format__explanation">(past tense of 'grind')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ground that I've seen before include "Soil - don't allow to fly - reason" , "Land; reduced to powder" , "Earth; crushed to powder" , "Earth surface, land" , "Earth; stop from flying" .)