A sack (3)
I believe the answer is:
bag
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a sack</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 bag that I've seen before include "Secure" , "Quantity of game shot in a particular period" , "Item of luggage; catch and kill (an animal)" , "Container for holding or carrying" , "Claim" .)