Quick snack (4)
I believe the answer is:
bite
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quick snack</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bite that I've seen before include "Quick snack" , "Get teeth into" , "Clamp down teeth" , "power" , "Take bait; sting" .)