Variable goal in short for a currency abroad (3)
I believe the answer is:
yen
'a currency abroad' is the definition.
I can't judge whether this defines the answer.
'variable goal in short' is the wordplay.
'variable' becomes 'y' (algebra).
'goal' becomes 'end' (both can mean a purpose).
'in short' means to remove the last letter.
'end' with its last letter taken off is 'en'.
'y'+'en'='YEN'
'for' is the link.
Can you help me to learn more?
(Other definitions for yen that I've seen before include "Longing (colloq.)" , "Intense longing" , "Urge" , "Currency of Japan" , "Longing for a currency unit" .)