Museum that awards the Turner Prize
I believe the answer is:
tate
'museum that awards the turner prize' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tate that I've seen before include "Art gallery benefactor" , "One of four art galleries in England" , "Lord Sugar" , "Name of two London galleries" , "Maurice - - , cricketer 1895-1956" .)