Love poetry by one abroad (7)
I believe the answer is:
oversea
'abroad' is the definition.
(I've seen this before)
'love poetry by one' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'poetry' becomes 'verse' (synonyms).
'by' is a charade indicator (letters next to each other).
'one' becomes 'a' (a thing is one thing).
'o'+'verse'+'a'='OVERSEA'
(Other definitions for oversea that I've seen before include "across the waves" , "Foreign" , "abroad" .)