Rivers shown by Miro? (4)
I believe the answer is:
joan
'miro?' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for joan that I've seen before include "- - Collins, actress" , "Darby and --, -- of Arc" , ". . . . of Arc, French warrior saint" , "- Sutherland, Australian soprano" , "'Saint - - ' (Shaw play)" .)