Japanese monetary unit (3)
I believe the answer is:
yen
'japanese monetary unit' is the definition.
(yen is a kind of japanese monetary unit)
This is all the clue.
(Other definitions for yen that I've seen before include "Strong desire" , "Longing, hankering after" , "Unit of money in Japan" , "Long for a coin" , "Itch, desire" .)