Vessel for liquids (6)
I believe the answer is:
bottle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">vessel for liquids</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bottle that I've seen before include "Preserve" , "Container for liquids" , "Type of marine mammal" , "Grit" , "Glass or plastic vessel" .)