Perhaps novice's news, entertaining for all (3)
I believe the answer is:
nun
'perhaps novice's' is the definition.
I can't judge whether this definition defines the answer.
'news entertaining for all' is the wordplay.
'news' becomes 'nn' (an abbreviation for new written twice).
'entertaining' indicates putting letters inside (inviting in, as for dinner).
'for all' becomes 'U' (Universal film certificate - suitable for all).
'nn' placed around 'u' is 'NUN'.
Can you help me to learn more?
(Other definitions for nun that I've seen before include "Religious sister" , "Female in religious order" , "Woman with a habit" , "Member of convent" , "Joshua's father" .)