gynoecium, gynaecium or (US) gynecium /jī- or gī-ni-sēˈəm/

1. The female organs of a flower (botany)
2. (chiefly gynaeceum) the women's quarters in an ancient Greek or Roman house

• one-way glass
• one-way mirror
• one way or the other
• one with another
• one-woman
• one-worlder
• one-worlders
• one-worldism
• oneyer
• oneyers
• oneyre
• oneyres
• onfall
• onfalls
• on file
• on fire
• on firm ground
• onflow
• onflows
• on foot
• on-going
• ongoing
• ongoings
• on guard
• on hand