Hen"na (?), n. [Ar. hinna alcanna (Lawsonia inermis or alba). Cf. Alcanna, Alkanet, Orchanet.]
1. Bot.
A thorny tree or shrub of the genus Lawsonia (L. 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 hails and fingers, the manes of horses, etc.
2. Com.
The leaves of the henna plant, or a preparation or dyestuff made from them.
© Webster 1913.