Admitted in a bulletin, finally (3,2)
I believe the answer is:
let in
'admitted' is the definition.
(I've seen this in another clue)
'in a bulletin finally' is the wordplay.
'in' says the answer is hidden in the clue.
'LET IN' is hidden in the letters of 'bulletin finally'.
(Other definitions for let in that I've seen before include "Allowed to enter" , "Allow to enter" , "Grant entry" , "Admit" , "swindle . . ." .)