三轮儿 sānlúnr tricycle Origin Definitions Defs Strokes Stroke Words Sentences Sents 三 sān numeral three the number three; 3轮 輪 lún noun wheel wheel; circular part in a machine or vehicle that rotates; disk or ring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.