Henna

Part of speech: noun (n.)

1. 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. The leaves of the henna plant, or a preparation or dyestuff made from them.