Spinning fine yarn that's beyond words (9)
I believe the answer is:
ineffable
'beyond words' is the definition.
(I've seen this before)
'spinning fine yarn' is the wordplay.
'spinning' is an anagram indicator.
'yarn' becomes 'fable' (both can mean a story).
'fine' with letters rearranged gives 'inef'.
'inef'+'fable'='INEFFABLE'
'that's' is the link.
(Other definitions for ineffable that I've seen before include "Unable to be described in words" , "beyond description" , "defying expression" , "Beyond words" , "Too sacred to be spoken" .)