noun
authentic precedent; classical allusion
Refers to a well-known historical or literary precedent used as an authoritative example or reference. Often used in formal or academic contexts.
彼の議論は典故に基づいている。
His argument is based on an authentic precedent.
From Chinese 典故 (diǎngù), meaning 'classical allusion' or 'literary reference'. The Japanese reading is the on'yomi of the characters.