Buffet table coffee server (3)
I believe the answer is:
urn
'buffet table coffee server' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for urn that I've seen before include "Pot for human ashes" , "Source of tea" , "Vase; tea vessel" , "Ornamental vessel" , "Large pot for making tea" .)