Museum focus (3)
I believe the answer is:
art
'museum focus' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for art that I've seen before include "Skill, craft" , "The works of Alma-Tadema" , "Paintings etc." , "Works of beauty created by humans" , "For example, Blakey's creative" .)