Travel overseas to get home (8)
I believe the answer is:
emigrate
'travel overseas to get home' is the definition.
I can't judge whether this defines the answer.
'travel overseas to get home' is the wordplay.
'travel overseas' becomes 'emigre' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to get' is an insertion indicator.
'home' becomes 'at home' (synonyms).
'emigre' placed around 'at' is 'EMIGRATE'.
Can you help me to learn more?
(Other definitions for emigrate that I've seen before include "Change country of residence" , "Gear item (anag.)" , "Go to settle in a foreign country" , "Leave home" , "Leave one's country to live elsewhere" .)