HENNA (כֹּ֤פֶר). In the RSV, camphire is called henna flowers. Camphire, a shrub called the Egyp. Privet, is mentioned in Song of Solomon and
Henna was used to color fingernails, toenails, and even the tips of fingers, red or orange. It was used on men’s beards, and the manes and tails of horses, and even the soles of girls’ feet.
International Standard Bible Encyclopedia (1915)
An aromatic plant.