Maiden taken in by corrupt dealer is kind of green (7)
I believe the answer is:
emerald
'kind of green' is the definition.
'maiden taken in by corrupt dealer' is the wordplay.
'maiden' becomes 'm' (cricket abbreviation).
'taken in by' indicates putting letters inside.
'corrupt' indicates an anagram.
'dealer' is an anagram of 'eerald'.
'm' placed within 'eerald' is 'EMERALD'.
'is' acts as a link.
(Other definitions for emerald that I've seen before include "city in Oz?" , "Green gemstone" , "Precious gemstone" , "...re medal? (Anag)" , "Small size of type, in printing" .)