Key water barrier in the Netherlands (4)
I believe the answer is:
edam
'the netherlands' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'key water barrier' is the wordplay.
'key' becomes 'e' (a musical key).
'water barrier' becomes 'dam' (I've seen this before).
'e'+'dam'='EDAM'
'in' is the link.
Can you help me to learn more?
(Other definitions for edam that I've seen before include "town in Holland" , "Danish cheese" , "Dutch 8 across" , "Red-coated cheese" , "Round, yellow cheese" .)