Head protector (6)
I believe the answer is:
helmet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">head protector</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 helmet that I've seen before include "Top Gear" , "Protective casing for the head" , "Tin hat" , "Armour for the head" , "Head protection" .)