instruction; teaching; precept
A somewhat formal or literary term for imparting teachings or precepts, often with a moral or authoritative tone. Not an everyday word for 'instruction'.
師の垂訓を胸に刻む。
I engrave my teacher's precepts in my heart.
Composed of 垂 (たれる, 'to hang down; to bestow') and 訓 (くん, 'teaching; precept'), suggesting teachings handed down from above. The exact historical derivation is uncertain.