碾滚子 niǎngǔnzi stone roller Origin Definitions Defs Strokes Stroke Words Sentences Sents 碾 niǎn roller A tool used for crushing, husking, or grinding grain or medicine, usually made of stone.滚子 滾子 gǔnzi roller a cylindrical object that rolls to reduce friction or move items, such as those used in bearings or conveyor belts