Money sent endlessly abroad (3)
I believe the answer is:
sen
'money' is the definition.
(I've seen this before)
'sent endlessly abroad' is the wordplay.
'sent' becomes 'based' ('base' can be a synonym of 'send').
'endlessly' indicates the central letters (the ends of the words are removed).
'abroad' becomes 'en' (I am not sure about this - if you are sure you should believe this answer much more).
The centre of 'based' is 's'.
's'+'en'='SEN'
Can you help me to learn more?
(Other definitions for sen that I've seen before include "Very small change for Japanese" , "nurse" , "Fraction of yen" , "Japanese coin" , "three quarters?" .)