Note tale about part of river (5)
I believe the answer is:
delta
'river' is the definition.
The definition and answer can be both natural objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'note tale about' is the wordplay.
'note' becomes 'd' (musical note).
'about' indicates anagramming the letters.
'tale' anagrammed gives 'elta'.
'd'+'elta'='DELTA'
'part of' acts as a link.
Can you help me to learn more?
(Other definitions for delta that I've seen before include "See Greek" , "one's often seen at mouth of river" , "The Greek D (5)" , "The fourth Greek letter found at river's mouth" , "Split river mouth system" .)