Star-strewn cultural pursuits (4)
I believe the answer is:
arts
'cultural pursuits' is the definition.
(the arts are cultural pursuits)
'star-strewn' is the wordplay.
'strewn' indicates anagramming the letters.
'star' anagrammed gives 'ARTS'.
(Other definitions for arts that I've seen before include "Drawing, painting, etc" , "Aesthetic pursuits for rats" , "Aesthetic creations for a star" , "Tricks" , "'Poetry, music, painting (4)'" .)