Quietly edit “About men in a sloping surface caused by erosion ” (8)
I believe the answer is:
pediment
'a sloping surface caused by erosion' is the definition.
I can't judge whether this definition defines the answer.
'quietly edit about men' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'about' is an insertion indicator.
'edit' enclosing 'men' is 'ediment'.
'p'+'ediment'='PEDIMENT'
'in' is the link.
Can you help me to learn more?
(Other definitions for pediment that I've seen before include "Triangular top to a portico" , "(Arch.) gable" , "Triangular architectural feature" , "Triangular structure on the front of a classical building" , "Triangular space over porch etc" .)