Asinine pronouncement from monarch borne by horse (4)
I believe the answer is:
bray
'asinine pronouncement' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'monarch borne by horse' is the wordplay.
'monarch' becomes 'r' (abbreviation for regina, e.g. in ER ).
'borne by' indicates putting letters inside (to bear can mean to carry).
'horse' becomes 'bay' (bay is a kind of horse).
'r' going inside 'bay' is 'BRAY'.
'from' is the link.
Can you help me to learn more?
(Other definitions for bray that I've seen before include "where musical vicar lived" , "The Vicar of --; heehaw" , "Donkey call" , "Donkey's heehaw" , "Harsh cry" .)