brass

A yellow alloy of copper and zinc, used for instruments and fittings.

"The antique lamp was made of solid brass."

Bold and shameless impudence or effrontery.

"He had the brass to ask for a pay rise."

Informal term for high-ranking officials or important people in an organisation.

"The top brass made the final decision."

Informal British term for money, especially coins.

"Have you got any brass on you?"