Tearaway has drive round middle of Slough (9)
I believe the answer is:
impetuous
'tearaway' is the definition.
(I know that tearaway can be written as impetuous)
'drive round middle of slough' is the wordplay.
'drive' becomes 'impetus' (impetus is a drive to do something).
'round' means one lot of letters goes inside another.
'middle of' indicates the central letters.
The middle of 'slough' is 'ou'.
'impetus' enclosing 'ou' is 'IMPETUOUS'.
'has' acts as a link.
(Other definitions for impetuous that I've seen before include "Acting rashly" , "Rash" , "Impulsive, hasty" , "Hot-headed" .)