Basement bar decoration (5)
I believe the answer is:
stein
'basement bar decoration' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stein that I've seen before include "Gertrude ---; US writer" , "Large earthenware beer mug" , "Inset into earthenware mug for beer" , "Gertrude __, avant-garde US author, d. 1946" , "Earthenware beer jug" .)