Record guile deployed to get round postscript (8)
I believe the answer is:
epilogue
'postscript' is the definition.
(I've seen this before)
'record guile deployed to get round' is the wordplay.
'record' becomes 'EP' (abbreviation for extended play record).
'deployed' indicates anagramming the letters.
'to get' means one lot of letters goes inside another.
'round' becomes 'o' (o is a circular letter).
'guile' is an anagram of 'ilgue'.
'ilgue' placed around 'o' is 'ilogue'.
'ep'+'ilogue'='EPILOGUE'
(Other definitions for epilogue that I've seen before include "Concluding section of book, play, etc" , "Short postscript" , "End-of-play speech" , "Final part of book" , "Late religious message" .)