Noun
1. an alloy of copper and zinc
2. a wind instrument that consists of a brass tube (usually of variable length) blown by means of a cup-shaped or funnel-shaped mouthpiece
3. the persons (or committees or departments etc.) who make up a body for the purpose of administering something;
"he claims that the present administration is corrupt""the governance of an association is responsible to its members""he quickly became recognized as a member of the establishment"4. impudent aggressiveness;
"I couldn't believe her boldness""he had the effrontery to question my honesty"5. an ornament or utensil made of brass
6. the section of a band or orchestra that plays brass instruments
7. a memorial made of brass