谓以同音字直接注音。 宋 陈振孙 《直斋书录解题》卷三：“《春秋直音》三卷， 德清 丞 方淑 智善 撰……以学者或不通音切，故於每字切脚之下，直注其音。”

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