pessary

/P EH1 S ER0 IY0/
noun
  1. 1

    A medical device similar to the outer ring of a contraceptive diaphragm, most commonly used to support a displaced uterus; also called therapeutic pessary.

  2. 2

    (contraception) A diaphragm or cervical cap.

  3. 3

    A vaginal suppository.

Source: https://en.wiktionary.org/wiki/pessary