Broken slates used decoratively (6)
I believe the answer is:
tassel
'used decoratively' is the definition.
I can't judge whether this definition defines the answer.
'broken slates' is the wordplay.
'broken' indicates an anagram.
'slates' anagrammed gives 'TASSEL'.
Can you help me to learn more?
(Other definitions for tassel that I've seen before include "Hanging ornament" , "Decorative bunch of cords" , "Part of a flower" , "Hanging bunch of cords" , "Decorative ending to a cord" .)