I dream of introducing new beginnings (7)
I believe the answer is:
infancy
'beginnings' is the definition.
(thesaurus)
'i dream of introducing new' is the wordplay.
'dream of' becomes 'fancy' (I can't justify this - if you can you should believe this answer much more).
'introducing' means one lot of letters goes inside another (some letters introduced or inserted into others).
'new' becomes 'n' (abbreviation as in New Testament NT).
'i'+'fancy'='ifancy'
'ifancy' enclosing 'n' is 'INFANCY'.
Can you help me to learn more?
(Other definitions for infancy that I've seen before include "youth" , "Babyhood" , "Early years" , "State of early childhood" , "Early stages of" .)