Zi Collection, Upper Volume Radical: Knife (dāo) Page 13, Entry 02 A type of linchpin for a carriage axle. Also, according to the "Classified Rhymes" (Guangyun), it is pronounced with the fanqie for "tu" and "guo," sounding the same as "duo." Also recorded in the "Jade Drawer" (Yupian) as a plowshare. Also, according to the "Rhymes of the Five Tones" (Wuyin Jiyun), it is pronounced with the fanqie for "tu" and "wei," sounding the same as "zhun." The meaning is the same.