Henna
Henna , noun
[Arabic hinnā alcanna (Lawsonia inermis syn. Lawsonia alba). Compare Alcanna, Alkanet, Orchanet.]
1.
(Botany) A thorny tree or shrub of the genus Lawsonia (Lawsonia alba). The fragrant white blossoms are used by the Buddhists in religious ceremonies. The powdered leaves furnish a red coloring matter used in the East to stain the nails and fingers, the manes of horses, etc.
2.
(Commerce) The leaves of the henna plant, or a preparation or dyestuff made from them.