Don't ring Rowling for a hooter (3)
I believe the answer is:
owl
'for a hooter' is the definition.
(owls hoot)
'don't ring rowling' is the wordplay.
'OWL' is hidden within the letters.
However, I am uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for owl that I've seen before include "Mainly nocturnal bird" , "Smuggle sheep" , "Traditionally wise bird" , "Head-swivelling night bird" , "Member of Parliament" .)