a small natural sponge or a piece of a synthetic sponge to which a loop of string may be attached. It is inserted into the vagina to absorb the menstrual flow. Once removed, it may be washed, squeezed dry, and reused as necessary throughout menstruation. Menstrual sponges are not commonly used.
menstrual spongeA semi-disposable natural sponge placed in the vagina during menses, used by some women instead of manufactured pads, tampons or menstrual cups.
This particular object is not recommended by mainstream gynaecologists, in large part because it is virtually impossible to sterilise sponges.