古こ昔せきこせきMeanings1nounancient times; olden daysLiterary or archaic term for the distant past. In modern Japanese, 古代 (こだい) or 昔 (むかし) are far more common.古こ昔せきの英えい雄ゆうの物もの語がたりを読よむのが好すきだ。I like reading tales of heroes from ancient times.