Portugal and Spain together (6)
I believe the answer is:
iberia
'portugal and spain together' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iberia that I've seen before include "European peninsula comprising Spain and Portugal" , "It comprises Spain and Portugal" , "Old name for Spanish peninsula" , "European countries" , "Overpower, overwhelm" .)