Restore to health (4)
I believe the answer is:
cure
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">restore to health</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 cure that I've seen before include "Preserve by smoking - make better" , "Parish priest in France" , "priest without an accent" , "Treat - French parish priest" , "Heal or pickle" .)