Such a hussy's not short of brass (6)
I believe the answer is:
brazen
'brass' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for brazen that I've seen before include "Shameless and bold - resembling brass" , "Insolent, barefaced" , "Forward" , "Unashamedly flagrant" , "Impudent, shameless" .)