马尾儿 mǎyǐr horsetail hair Definitions Defs Origin Strokes Stroke Words Sentences Sents 马尾 馬尾 mǎwěi noun horse's tail horse's tail; horsehair儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.