Flexible container (3)
I believe the answer is:
bag
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">flexible container</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 bag that I've seen before include "Quantity of game shot in a particular period" , "Sack" , "Container for carrying thing" , "interest" , "Carrier" .)