Brewery fixture (3)
I believe the answer is:
vat
'brewery fixture' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vat that I've seen before include "subject of 17, 8 [CHANCELLORS STATEMENT]" , "Large vessel for storing liquids and a large tax" , "Large tank or vessel" , "Large tank; purchase tax" , "Barrel - tax" .)