Author boring a natural coordinator (7)
I believe the answer is:
medulla
'natural coordinator' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'author boring a' is the wordplay.
'author' becomes 'me' (the author of the crossword).
'boring' becomes 'dull' (similar in meaning).
'me'+'dull'+'a'='MEDULLA'
Can you help me to learn more?
(Other definitions for medulla that I've seen before include "Lower part of the brain" , "Innards of organ" , "centre of organ" , "bit of brain" , "pith" .)