Nourishing substance (4)
(Other definitions for food that I've seen before include "Solid nourishment" , "Sustenance" , "Edibles" , "Nutriment" , "Eatables" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nourishing substance</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nutrient that I've seen before include "Source of nourishment" , "Substance providing nourishment" , "Substance to give energy and build tissue" , "Feeding" , "Substance essential for growth" .)