Crossword Genius

Jeer bishop's mistake (4)

Ross

I believe the answer is:

boob

'mistake' is the definition.
(thesaurus)

'jeer bishop's' is the wordplay.
'jeer' becomes 'boo' (I've seen this before).
'bishop' becomes 'b' (abbreviation used in chess).
'boo'+'b'='BOOB'

(Other definitions for boob that I've seen before include "Embarrassing mistake" , "Slip" , "Error" , "Mistake; breast (sl.)" , "Blunder (colloq.)" .)

I've seen this clue in The Independent.
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