A large waterfowl on the Nile (5)
I believe the answer is:
aswan
'nile' is the definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?
'a large waterfowl on' is the wordplay.
'large waterfowl' becomes 'swan' (I've seen this in another clue. I am not sure about the 'large' bit.).
'on' means one lot of letters go next to another.
'a'+'swan'='ASWAN'
'the' is the link.
Can you help me to learn more?
(Other definitions for aswan that I've seen before include "Egyptian town and dam" , "Site of dam on the Nile" , "Large dam in Egypt" , "Site of dam in Egypt" , "Ancient city on the Nile" .)