The foreigner got back again into Spain, somehow (7)
I believe the answer is:
persian
'the foreigner' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'back again into spain somehow' is the wordplay.
'back' says the letters should be written in reverse.
'again' becomes 're'.
'into' means one lot of letters goes inside another.
'somehow' is an anagram indicator.
're' reversed gives 'er'.
'spain' with letters rearranged gives 'psian'.
'er' going inside 'psian' is 'PERSIAN'.
'got' acts as a link.
Can you help me to learn more?
(Other definitions for persian that I've seen before include "From Iran?" , "Type of cat or carpet" , "Breed of cat" , "Long-haired cat" , "Iranian language" .)