n. pl. ti·tis 1. A shrub or small tree (Cyrilla racemiflora) of warm wetland regions of the Americas, having leathery leaves and small white flowers clustered in racemes. Also called leatherwood.
2. An evergreen shrub or small tree (Cliftonia monophylla) of the southeast United States, having glossy leathery leaves, white to pinkish flowers clustered in racemes, and winged fruit. Also called buckwheat tree.