Staff of life (5)
I believe the answer is:
bread
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">staff of life</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bread that I've seen before include "Foodstuff; money" , "Nan, for instance" , "Staple food" , "Staff of life" , "rhino" .)