Efficient report of first murder victim (4)
I believe the answer is:
abel
This clue could be a double definition.
'efficient report' is the first definition.
The definition suggests a singular noun which matches the answer.
'first murder victim' is the second definition.
(Abel was murdered by his brother Cain in the Bible)
'of' acts as a link.
Can you help me to learn more?
(Other definitions for abel that I've seen before include "Adamson" , "Biblical murder victim" , "The Third Man" , "Cain's 11" , "Early man equipped" .)