Sharp ache (4)
I believe the answer is:
pang
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sharp ache</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 pang that I've seen before include "A sudden sharp feeling" , "Sudden painful emotion" , "Sudden feeling of hunger or pain" , "Sharp spasm of pain" , "Sharp emotional pain" .)