Silly natter with new resident, one allowed in (7)
I believe the answer is:
entrant
'resident one allowed in' is the definition.
I can't judge whether this definition defines the answer.
'silly natter with new' is the wordplay.
'silly' is an anagram indicator.
'with' indicates putting letters inside.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'natter' with letters rearranged gives 'etrant'.
'etrant' placed around 'n' is 'ENTRANT'.
Can you help me to learn more?
(Other definitions for entrant that I've seen before include "New member or competitor" , "One going in for something" , "Participant in, eg, a race" , "Who goes in" , "One going in for a race or competition" .)