Actor Matt comes north as wanderer (5)
I believe the answer is:
nomad
'wanderer' is the definition.
(I know that Nomad is a type of wanderer)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nomad that I've seen before include "drifter" , "Unsettled type" , "is one unsettled?" , "Unsettled character" , "One travels from place to place with no permanent home" .)