Pes"sa*ry (?), n.; pl. Pessaries (#). [L. pessarium, pessum, pessus, Gr. &?;: cf. F. pessaire.] (Med.) (a) An instrument or device to be introduced into and worn in the vagina, to support the uterus, or remedy a malposition. (b) A medicinal substance in the form of a bolus or mass, designed for introduction into the vagina; a vaginal suppository.

• vaginal suppository