Goat briefly faces wind from east peninsula (6)
I believe the answer is:
iberia
'peninsula' is the definition.
(peninsula including Spain and Portugal)
'goat briefly faces wind from east' is the wordplay.
'goat' becomes 'ibex' (ibex is a kind of goat).
'briefly' means to remove the last letter.
'faces wind' becomes 'air' (I can't justify this - if you can you should give a lot more credence to this answer).
'from east' says the letters should be written backwards (letters written right to left or 'east to west').
'air' reversed gives 'ria'.
'ibex' with its final letter taken away is 'ibe'.
'ibe'+'ria'='IBERIA'
Can you help me to learn more?
(Other definitions for iberia that I've seen before include "Overpower, overwhelm" , "Spain and Portugal - airline" , "Peninsula encompasing Spain and Protugal" , "European territory" , "Spain's national flag-carrying airline" .)