ぜんれい前例zenrei
1.
An example or case that has been referenced or cited in the past to guide current decisions or actions.
2.
A prior instance or event that serves as a model or standard for similar situations that may arise in the future.
3.
An established occurrence or example that is used to illustrate or justify a point in legal or formal contexts.
Example:
このような問題の前例はない。