It covers the tomb of an early evangelist, we hear (4)
I believe the answer is:
pall
'it covers the tomb of an early evangelist we hear' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for pall that I've seen before include "Become less appealing" , "Cloth to cover a coffin" , "Cloth spread over a coffin" , "Cloth over a coffin - become insipid" , "Curtain of smoke" .)