the makeup (usually burnt cork) used by a performer in order to imitate a Negro
blackface详细解释
black.face n.（名词）Makeup for a conventionalized comic travesty of Black people, especially in a minstrel show.扮演黑人的化妆：滑稽模仿黑人的传统喜剧的化妆，尤其是在黑脸歌唱团表演中An actor wearing such makeup in a minstrel show.唱黑人歌曲的黑人歌手：在黑人歌唱团表演中如此化妆的演员
