One pub joining another in welcoming a savage (9)
I believe the answer is:
barbarian
'a savage' is the definition.
('barbarian' can be a synonym of 'savage')
'one pub joining another in welcoming' is the wordplay.
'one' becomes 'a'.
'pub' becomes 'bar' (I've seen this before).
'joining' is a charade indicator (letters next to each other).
'another in' becomes 'brian' (I can't explain this - if you can you should give a lot more credence to this answer).
'welcoming' is an insertion indicator.
'bar'+'brian'='barbrian'
'a' put within 'barbrian' is 'BARBARIAN'.
Can you help me to learn more?
(Other definitions for barbarian that I've seen before include "Brutish type" , "uncouth type" , "An uncivilised, rough person" , "Uncivilised - Goth" , "outlandish foreigner" .)