pau·low·ni·a (pô-lō'nē-ə) n. Any of several Chinese deciduous trees of the genus Paulownia, having large, heart-shaped, opposite leaves and pyramidal panicles of purplish or white flowers with a spotted interior. Also called princess tree.
[New Latin, genus name, after Princess Anna Paulovna (1795-1865), Russian princess and queen of William II of the Netherlands.]