the day before celebrationとは 意味・読み方・使い方

Also, the event of kagamibiraki carried out by a woman using a kagamimochi offered before a bronze-mirrored dressing table is called a celebration of 'hatsukao (the first face),' and this word is an engo (word associated) with the word 'hatsuka,' meaning the twentieth day.発音を聞く 例文帳に追加

また、女性が銅鏡台に供えた鏡餅を開く事を「初顔」を祝うといい、二十日（はつか）にかける縁語とした。 - Wikipedia日英京都関連文書対訳コーパス