便衣 biànyī plain clothes Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: plain clothes All meanings 2 biànyī 2 plain clothes 1plainclothesman 1 1 sentence for 便衣 (biànyī — plain clothes) 他今天穿着便衣,没穿警服。 tā jīntiān chuānzhe biànyī, méi chuān jǐngfú. He is wearing plain clothes today instead of his police uniform. Source: Dong Chinese Dictionary