屁股蹲儿 pìgudūnr a fall on the buttocks Origin Definitions Defs Strokes Stroke Words Sentences Sents 屁股蹲 pìgudūn fall on the buttocks a fall on the seat of one's pants or the buttocks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.