Lawsonia \Law*so"ni*a\, n. (Bot.)
An Asiatic and North African shrub ({Lawsonia inermis}), with
smooth oval leaves, and fragrant white flowers. {Henna} is
prepared from the leaves and twigs. In England the shrub is
called {Egyptian privet}, and in the West Indies, {Jamaica
mignonette}.
[1913 Webster]