Rook carried out and led off (6)
I believe the answer is:
diddle
'rook' is the definition.
(both can mean to defraud or cheat)
'carried out and led off' is the wordplay.
'carried out' becomes 'did' (to do something is to carry out or execute it).
'and' means one lot of letters go next to another.
'off' indicates anagramming the letters.
'led' with letters rearranged gives 'dle'.
'did'+'dle'='DIDDLE'
(Other definitions for diddle that I've seen before include "Fleece" , "Slang for cheat or swindle - nearly fiddle" , "Did, and led out to cheat" , "Con - do - lidded (anag)" , "Slangily cheat or swindle" .)