Why is the ninth month called September?
c.1400, from Late Latin pessarium, from Greek pessarion "medicated tampon of wool or lint," diminutive of pessos "pessary," earlier "oval stone used in games," perhaps of Semitic origin.
pessary pes·sa·ry (pěs'ə-rē)
Any of various devices worn in the vagina to support or correct the position of the uterus or rectum.
A contraceptive diaphragm.
A medicated vaginal suppository.