Cans (4)
I believe the answer is:
tins
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cans</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tins that I've seen before include "Cans" , "food containers" .)