brass/bræs; brɑːs/ n 1 [U] a shiny yellow metal that is a mixture of COPPER and ZINC 黄铜: a pine chest with brass handles 有铜柄的松木箱子 2 the brass (section) a group of musical instruments made of brass, such as TRUMPETs, in an ORCHESTRA or band 〔管弦乐队等的〕铜管乐器部