Brass (noun)

1. A yellowish alloy of copper and zinc, used especially for making musical instruments, decorative objects, and brassware.
2. An object made of brass.
3. A group of people in a band or orchestra who play brass instruments.
4. A group of people in a military organization who play brass instruments.

Origin:

Old english bræs, of germanic origin; related to dutch brons and german bronze.

Examples:

1. The trumpet was made of brass.
2. The brass band played at the parade.
3. The brass section in the orchestra was very talented.
4. The brass on the military uniform was polished to a high shine.
5. Brass is a yellowish alloy of copper and zinc.