皮筋儿 píjīnr rubber band Origin Definitions Defs Strokes Stroke Words Sentences Sents 皮筋 píjīn rubber band a loop or strip of elastic rubber used for holding things together; also called 橡皮筋 xiàngpíjīn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.