Bodily fluid (5)
I believe the answer is:
blood
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bodily fluid</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that blood is a type of bodily fluid)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for blood that I've seen before include "Descent, lineage" , "Gore" , "Recorded and respected ancestry" , "Kinship; temperament" , "Male siblings -- sworn friends" .)