Content to leave Hardy and The Woman in White unfinished, getting cross (6)
I believe the answer is:
hybrid
'cross' is the definition.
(I've seen this before)
'content to leave hardy and the woman in white unfinished' is the wordplay.
'content to leave' says to hollow out the word (remove centre letters) (the contents of the word are removed).
'and' is a charade indicator (letters next to each other).
'the woman in white' becomes 'bride' (brides traditionally wear white).
'unfinished' means to remove the last letter.
'hardy' with its centre taken out is 'hy'.
'bride' with its last letter taken away is 'brid'.
'hy'+'brid'='HYBRID'
'getting' is the link.
(Other definitions for hybrid that I've seen before include "outcome of miscegenation?" , "Cross of two different species or varieties" , "Compound, mixture" , "Of mixed ancestry" , "Plant grown from two different species" .)