旧きゅう識しききゅうしきMeanings1nounold friend; old acquaintanceA somewhat literary or formal term for a person one has known for a long time. In everyday speech, 昔の友達 or 古い友人 are more common.彼かれは大だい学がく時じ代だいの旧きゅう識しきだ。He is an old friend from my university days.旧きゅう識しきにばったり会あった。I ran into an old acquaintance.