Peruvian currency (3)
I believe the answer is:
sol
'peruvian currency' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sol that I've seen before include "The sun in 12 Across" , "Peruvian currency; Roman sun god" , "Roman counterpart of Helios" , "Mexican lager" , "Musical note" .)