pes ‧ sa ‧ ry /ˈpesəri/ BrE AmE noun ( plural pessaries ) [countable]
1 . a small block of medicine which a woman puts into her ↑ vagina in order to cure an infection or to stop herself becoming ↑ pregnant
2 . an instrument put into a woman’s ↑ vagina to support her ↑ womb