- the female gonad or reproductive gland, in which the ova and the hormones that regulate female secondary sex characteristics develop.
- the enlarged lower part of the pistil in angiospermous plants, enclosing the ovules or young seeds.
- either of the two female reproductive organs, which produce ova and secrete oestrogen hormones
- the corresponding organ in vertebrate and invertebrate animals
- the hollow basal region of a carpel containing one or more ovules. In some plants the carpels are united to form a single compound ovary
