noun
former reading; old reading
Refers to an earlier or traditional reading of a kanji or classical Chinese text, often contrasted with a newer or revised reading.
この漢字の旧訓は「さとる」だが、今は「あきら」と読むことが多い。
The former reading of this kanji is 'satoru', but nowadays it is often read as 'akira'.
noun
ancient teachings; old lessons
Refers to teachings or precepts from ancient times, often in a Confucian or classical context. This sense is less common in modern usage.
彼は旧訓に従って日々の行いを正した。
He corrected his daily conduct according to the ancient teachings.