Hardy lass (4)
I believe the answer is:
tess
'hardy lass' is the definition.
(in Tess of the d'Urbervilles, Thomas Hardy novel)
This is the entire clue.
(Other definitions for tess that I've seen before include "tragic heroine" , "20 heroine" , "Thomas Hardy heroine" , "Hardy's pure woman" , "Thomas Hardy girl" .)