Brazen: Inflexible- as if made of brass.
Isaiah 48:4
Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass;
Brazen Hussy
Meaning: A immoral housewife.
Proverbs 7:10-13
And, behold, there met him a woman with the attire of an harlot, and subtil of heart. [11] (She is loud and stubborn; her feet abide not in her house: [12] Now is she without, now in the streets, and lieth in wait at every corner.) [13] So she caught him, and kissed him, and with an impudent face said unto him,