圆石头 Traditional form: 圓石頭 Pinyin (reading): yuánshítou Definitions: boulder Characters: 圆 - circle; circular, round; complete 石 - stone, rock, mineral 头 - head; chief, boss; first, top Traditional characters: 圓 - circle; circular, round; complete 石 - stone, rock, mineral 頭 - head; chief, boss; first, top