(intransitive) To turn a brass color.

(transitive) Generally followed by out or through: to carry through in a brazen manner; to act boldly despite embarrassment, risk, etc.

(archaic) Pertaining to, made of, or resembling brass (in color or strength).

Sounding harsh and loud, like brass cymbals or brass instruments.

(archaic) Extremely strong; impenetrable; resolute.

Shamelessly shocking and offensive; audacious; impudent; barefaced; immodest, unblushing.