German beer mug (5)
I believe the answer is:
stein
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">german beer mug</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 stein that I've seen before include "German tankard" , "Large earthenware beer mug" , "Inset into earthenware mug for beer" , "Gertrude ---; US writer" , "Beer-mug" .)