古こ譚たんこたんMeanings1nounold tale; ancient storyrare termRare literary term for an old story or legend. Often used in titles or academic contexts; in everyday speech, 昔話 (むかしばなし) is the common word.See also: 昔話この地ち方ほうに伝つたわる古こ譚たんを集あつめた本ほんを読よんだ。