A Welsh girl abandoning centre of Conwy for continent (4)
I believe the answer is:
asia
'for continent' is the definition.
(Asia is an example)
'a welsh girl abandoning centre of' is the wordplay.
'welsh girl' becomes 'si' (I can't justify this - if you can you should give a lot more credence to this answer).
'abandoning' becomes 'forsaking' ('forsake' can be a synonym of 'abandon').
'centre of' means to look at the middle letters.
The middle letter of 'forsaking' is 'a'.
'a'+'si'+'a'='ASIA'
'conwy' is the link.
This may not be correct. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for asia that I've seen before include "lands in the east" , "A is A (anag)" , "Continent of the Hindu Kush" , "One-third of all land" , "Heavily populated area" .)