Some bulletins admitted (3,2)
I believe the answer is:
let in
'admitted' is the definition.
(I've seen this in another clue)
'some bulletins' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'LET IN' can be found hidden inside 'bulletins'.
(Other definitions for let in that I've seen before include "swindle . . ." , "Admit" , "Allowed to enter" , "Grant entry" , "Allow to enter" .)