Australian territory featured in leading woman's book launches maybe (6)
I believe the answer is:
events
'book launches maybe' is the definition.
(type of event)
'australian territory featured in leading woman's' is the wordplay.
'australian territory' becomes 'NT' (abbreviation for Northern Territory).
'featured in' means one lot of letters goes inside another.
'leading woman's' becomes 'eves' (first woman in the Bible).
'nt' placed within 'eves' is 'EVENTS'.
(Other definitions for events that I've seen before include "Planned social occasions" , "Occurrences, happenings" , "Important happenings for Steven" , "Important happenings or incidents" , "Incidents, occurrences" .)