Trade knight for rook in plot that's set up for provocation (3,3)
I believe the answer is:
red rag
'provocation' is the definition.
Both the definition and answer are singular nouns.
I also know that 'provocation' relates to this answer.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for red rag that I've seen before include "might attract a charge" , "Gerard (anag) - cause of infuriation" , "Proverbial bull enrager" , "Reputed to annoy bull" , "Bull incitor?" .)