Snake poison (5)
I believe the answer is:
venom
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">snake poison</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for venom that I've seen before include "Poisonous liquid of snakes" , "bitterness" , "Poison; malice" , "Virulence" , "Bitter malice" .)