Devour — mock (5)
I believe the answer is:
scoff
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">devour</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">mock</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(scoff can mean to mock or tease)</span><br/ ><br/ ></span>
(Other definitions for scoff that I've seen before include "Jeer; eat greedily" , "taunt" , "Quickly swallow" , "Speak derisively" , "Eat like a pig" .)