便衣 biànyī plain clothes Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: plainclothesman All meanings 2 biànyī 2 plain clothes 1plainclothesman 1 1 sentence for 便衣 (biànyī — plainclothesman) 几名便衣混在人群中执行任务。 jǐ míng biànyī hùn zài rénqún zhōng zhíxíng rènwu. Several plainclothes officers mingled with the crowd to carry out their mission. Source: Dong Chinese Dictionary