expression, noun
Girls' Day; Dolls' Festival; Hinamatsuri
Refers to the Japanese festival on March 3rd, also known as ひな祭り. Often used in contexts explaining the celebration to children or in casual conversation.
See also: ひな祭り (ひなまつり)
3月3日は女の子の日で、ひな人形を飾ります。
March 3rd is Girls' Day, and we display hina dolls.
expression, noun
menstrual day; period
Euphemistic expression for menstruation, used in casual or indirect speech. More common in spoken language or informal writing.
今日は女の子の日で、ちょっと体がだるい。
It's that time of the month, and I feel a bit sluggish.
生理 is the standard medical term for menstruation, whereas 女の子の日 is a softer, euphemistic alternative.
Compound of 女の子 (girl) + の (possessive particle) + 日 (day). The literal meaning 'girls' day' is applied euphemistically to both the Hinamatsuri festival and menstruation.