dye1/daI; daI/n [C,U] a substance that you use to change the colour of hair, cloth etc 染料
dye2v [T] past tense and past participle dyed present participle dyeing to change the colour of something, using a dye 给…染色﹐把…染成〔某色〕: Her hair was dyed blonde. 她的头发染成了金黄色。