Split screen in court showing Turkish emblem (8)
I believe the answer is:
crescent
'turkish emblem' is the definition.
(I've seen this before)
'split screen in court' is the wordplay.
'split' is an anagram indicator.
'in' is an insertion indicator.
'court' becomes 'ct'.
'screen' is an anagram of 'rescen'.
'rescen' placed inside 'ct' is 'CRESCENT'.
'showing' acts as a link.
(Other definitions for crescent that I've seen before include "Shape of new moon" , "Shape of waxing or waning moon" , "Phase of the moon" , "Turkish emblem" , "Sickle-shape" .)