Bog bowl broken by one of a wicked bent (8)
I believe the answer is:
fiendish
'a wicked bent' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'bog bowl broken by one' is the wordplay.
'bog' becomes 'fen' (I've seen this in another clue).
'bowl' becomes 'dish' (a bowl is a type of dish).
'broken by' means one lot of letters goes inside another (inserted letters break into the word).
'one' becomes 'i' (Roman numeral).
'fen'+'dish'='fendish'
'fendish' placed around 'i' is 'FIENDISH'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for fiendish that I've seen before include "Extremely cruel" , "Diabolic" , "Very difficult" , "how diabolically cruel" , "This Sudoku" .)