The poor outsiders' god (4)
I believe the answer is:
thor
'god' is the definition.
(Thor is an example)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for thor that I've seen before include "Norse god of war" , "Norse god of thunder - a weekday is named after him" , "can be classed as immortal" , "The Thunderer" , "Germanic deity" .)