Entertainer without a roof over his head (6)
I believe the answer is:
busker
'entertainer' is the definition.
(busker is a kind of entertainer)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for busker that I've seen before include "player in street" , "Street musician" , "Street performer" , "Public entertainer" , "Street entertainer" .)