Moving record of old poet taking last of coterie cycling (5)
I believe the answer is:
video
'moving record' is the definition.
(record with moving pictures)
'old poet taking last of coterie cycling' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'poet' becomes 'div' (I am not sure about this - if you are sure you should believe this answer much more).
'taking' indicates putting letters inside.
'last of' indicates one should take the final letters.
'cycling' says the letters should be written in reverse (letters cycle back).
The final letter of 'coterie' is 'e'.
'o'+'div'='odiv'
'odiv' going around 'e' is 'oediv'.
'oediv' reversed gives 'VIDEO'.
'of' acts as a link.
(Other definitions for video that I've seen before include "Recorded visual image" , "YouTube media" , "Relating to televised images" , "Film recording" , "Taped film" .)