Run after one foreign friend or another (5)
I believe the answer is:
amigo
'or another' is the definition.
I can't tell whether this defines the answer.
'run after one foreign friend' is the wordplay.
'run' becomes 'go' (synonyms).
'after' means one lot of letters go next to another.
'one foreign friend' becomes 'ami' (I can't explain this - if you can you should give a lot more credence to this answer).
'go' put after 'ami' is 'AMIGO'.
Can you help me to learn more?
(Other definitions for amigo that I've seen before include "Friend from Spain?" , "China (in Spain's view)" , "A Spanish pal" , "friend from Barcelona" , "in a foreign land, my friend?" .)