0 used as a polite way to refer to menstruation (= a monthly flow of blood from the uterus) and products or other things that may be needed during menstruation:
Menstrual products are euphemistically referred to as items of "feminine hygiene".
There was a sign warning about flushing anything down the loo, which I guessed was referring to items for feminine hygiene.
Some men are still embarrassed to buy products placed alongside women's beauty accessories or, even worse, in the "feminine hygiene" section of a store.
