謂以同音字直接注音。 宋 陳振孫 《直齋書錄解題》卷三：“《春秋直音》三卷， 德清 丞 方淑 智善 撰……以學(xué)者或不通音切，故於每字切腳之下，直注其音?！?/p>

1.{語} traditional method of indicating the pronunciation of a Chinese character by citing another character with the same pronunciation