Sort of figure a long coat disguises (9)
I believe the answer is:
octagonal
'sort of figure a long coat disguises' is the definition.
I can't judge whether this defines the answer.
'sort of figure a long' is the wordplay.
'sort of figure' becomes 'octagon' ().
'long' becomes 'l'.
'octagon'+'a'+'l'='OCTAGONAL'
Can you help me to learn more?
(Other definitions for octagonal that I've seen before include "Having eight straight sides" , "with quite a few sides" , "with certain sides" , "Eight-sided" , "With eight sides and angles" .)