pessary
From Longman Dictionary of Contemporary Englishpessarypes‧sa‧ry /ˈpesəri/ noun (plural pessaries) [countable] 1 SYa small block of medicine which a woman puts into her vagina in order to cure an infection or to stop herself becoming pregnant2 SYan instrument put into a woman’s vagina to support her wombExamples from the Corpuspessary• I pushed in a couple of pessaries, untied the sack from my middle and pulled my shirt over my head.