Done with husband, a half-cut dung beetle (8)
I believe the answer is:
overhang
'beetle' is the definition.
('overhang' can be a synonym of 'beetle')
'done with husband a half-cut dung' is the wordplay.
'done with' becomes 'over' (similar in meaning as in 'over and done with').
'husband' becomes 'h'.
'half-cut' suggests halving the letters.
'dung' with half the letters taken is 'ng'.
'over'+'h'+'a'+'ng'='OVERHANG'
(Other definitions for overhang that I've seen before include "Cast a shadow" , "Project, beetle" , "Lean out - project" , "Extend beyond (a roof, perhaps)" , "Projecting part" .)