Mistake taking rook with queen (3)
I believe the answer is:
err
'mistake' is the definition.
(synonyms)
'rook with queen' is the wordplay.
'rook' becomes 'er' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' says to put letters next to each other.
'queen' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'er'+'r'='ERR'
'taking' is the link.
(Other definitions for err that I've seen before include "Transgress" , "Blunder" , "Go astray" , "Sin" , "Be incorrect" .)