Pilferage (5)
I believe the answer is:
theft
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pilferage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for theft that I've seen before include "Pilferage" , "Burglary" , "Pilfering" , "Taking offence?" , "heavy crime" .)