Creative activity (3)
I believe the answer is:
art
'creative activity' is the definition.
(I know that art is a type of creative activity)
This is all the clue.
(Other definitions for art that I've seen before include "are old-fashioned" , "Creative works; knack" , "Works of beauty created by humans" , "Work such as painting or sculpture" , "Lovely piece of work" .)