Cyril Knowles's final moving words (6)
I believe the answer is:
lyrics
'words' is the definition.
(I have seen 'Words of songs ' mean 'lyrics' so perhaps 'words' could also mean 'lyrics')
'cyril knowles's final moving' is the wordplay.
'final' says to take the final letters.
'moving' indicates an anagram (letters are moved around).
The final letter of 'knowles' is 's'.
'cyril'+'s'='cyrils'
'cyrils' with letters rearranged gives 'LYRICS'.
(Other definitions for lyrics that I've seen before include "words to perform" , "Words used in songs" , "words in numbers" , "Short song-like poems" , "Words of a pop song" .)