It receives word of a murder that's been arranged (7)
I believe the answer is:
eardrum
'it receives word' is the definition.
The definition suggests a singular noun which matches the answer.
'a murder that's been arranged' is the wordplay.
'that's been arranged' is an anagram indicator.
'a'+'murder'='amurder'
'amurder' is an anagram of 'EARDRUM'.
'of' is the link.
Can you help me to learn more?
(Other definitions for eardrum that I've seen before include "Vibrating membrane in the head" , "Rude ram (anag.)" , "Listener partly" , "Otic membrane" , "Tympanic membrane" .)