Newspapers, collectively (3,5)
(Another definition for the press that I've seen is " Newspapers, collectively".)
'newspapers collectively' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for press that I've seen before include "Fourth estate" , "Cupboard for storing clothes" , "Ram" , "Crush - Fleet Street of old" , "Enlist crew" .)