Oprah's broadcast reaching new generation - it's an institution (9)
I believe the answer is:
orphanage
'it's an institution' is the definition.
(orphanage is a kind of institution)
'oprah's broadcast reaching new generation' is the wordplay.
'broadcast' is an anagram indicator (letters scattered or cast around).
'reaching' means one lot of letters go next to another.
'new' becomes 'n' (abbreviation as in New Testament NT).
'generation' becomes 'age' (I've seen this in another clue).
'oprah' anagrammed gives 'orpha'.
'orpha'+'n'+'age'='ORPHANAGE'
(Other definitions for orphanage that I've seen before include "Institution for parentless or abandoned children" , "building" , "Children's home" , "Parentless children's institution" , "Home for parentless children" .)