石头子儿 shítouzǐr pebble Origin Definitions Defs Strokes Stroke Words Sentences Sents 石头 石頭 shítou noun stone stone; rock子 zi affix noun suffix [suffix] used to form nouns from noun, verb, or adjective roots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.