Say more than enough after turning over of king (3,7)
I believe the answer is:
for example
'say' is the definition.
(I've seen this in another clue)
'more than enough after turning over of king' is the wordplay.
'more than enough' becomes 'ample' (I've seen this in another clue).
'after' means one lot of letters go next to another.
'turning over' says the letters should be written backwards.
'king' becomes 'rex' ('king' in Latin).
'of' written backwards gives 'fo'.
'fo'+'rex'='forex'
'ample' after 'forex' is 'FOR EXAMPLE'.
(Other definitions for for example that I've seen before include "By way of illustration" , "Say" , "Speed" .)