- any of several trees of the genus Nyssa, having ovate leaves, clusters of minute flowers, and purple, berrylike fruit, especially N. aquatica, of swampy regions of the eastern, southern, and midwestern U.S.
- the soft, light wood of these trees.
- a city in NE Mississippi.
- any of several cornaceous trees of the genus Nyssa, esp N. aquatica, a large tree of deep swamps and rivers of the southern US
- the light strong wood of any of these trees
