After bungling order, he'd be on a plank (8)
I believe the answer is:
bonehead
'after bungling order he'd be on a plank' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'after bungling order he'd be on a plank' is the wordplay.
'he'd be on a' anagrams to 'BONEHEAD'.
However, I am unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for bonehead that I've seen before include "dope" , "Fool" , "Stupid person with ossified brain" , "Numbskull" , "stupid leader" .)