The time before last (two events ago); used for meetings, broadcasts, matches, etc., to indicate the occurrence two occurrences prior.
前々回の会議で決まった事項を確認しましょう。
Let's confirm the matters decided at the meeting before last.
彼は前々回の大会でも優勝している。
He also won the tournament two editions ago.
前々回の資料を持ってきてください。
Please bring the materials from the meeting before last.