Destroy the note that was carried (5)
'destroy' is the definition.
'the note that was carried' is the wordplay.
I cannot quite understand how this works, but
'note' could be 'e' (musical note) and 'e' is present in the answer.
The remaining letters 'rode' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for erode that I've seen before include "Gradually destroy", "Abrade", "Eat away", "Slowly remove", "Corrode".)