Watery liquid (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">watery liquid</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for whey that I've seen before include "Milk component" , "Water separated from milk" , "Product of clotting milk" , "Watery remains after the curds are separated in milk" , "Watery constituent of milk" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">watery liquid</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for serum that I've seen before include "Muser in blood" , "Inoculation liquid" , "Watery fluid from animal tissue" , "Constituent of blood" , "Watery liquid as from blister, or fluid in blood" .)