Cliff notes

Noun

plural plural-only

A rundown (rough outline) of a situation, event, etc.

Japanese Meaning

要約 / 概要説明 / 大意

Before the meeting, send me the Cliff notes so I can catch up quickly.

会議の前に、手短な要点のまとめを送ってください。すぐに把握できるように。

Sense（1）

A rundown (rough outline) of a situation, event, etc.

Ryker stepped forward and blurted out the cliff notes of the current crisis.