尺牍 chǐdú writing tablet Origin Definitions Defs Strokes Stroke Words Sentences Sents chǐdú writing tablet 尺 chǐ noun chi a Chinese unit of length equal to one-third of a meter; a Chinese foot牍 牘 dú writing tablet (bound form) wooden tablet or slip used for writing in ancient timeschǐdú letter 尺 chǐ noun chi a Chinese unit of length equal to one-third of a meter; a Chinese foot牍 牘 dú document (bound form) official document; letter; book