Right to enter guilty plea? (9)
I believe the answer is:
admission
I believe this is a double definition.
'right to enter' is the first definition.
(I've seen this in another clue)
'guilty plea?' is the second definition.
(I've seen this before)
(Other definitions for admission that I've seen before include "Letting in - letting out" , "concession" , "Right to enter" , "Acknowledge of the truth of something" , "Disclosure" .)