Container; drug (3)
I believe the answer is:
pot
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">container</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that pot is a type of container)</span><br/ ><br/ >'<span class="explanation-format__original">drug</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(slang term for cannabis)</span><br/ ><br/ ></span>
(Other definitions for pot that I've seen before include "prize" , "Cooking vessel, plant container and street drug" , "Street name for cannabis" , "Trophy; kitty" , "Grass" .)