[hen.na] n [Ar hinna'] (1600) 1: a reddish brown dye obtained from leaves of the henna plant and used esp. on hair
2: an Old World tropical shrub or small tree (Lawsonia inermis) of the loosestrife family with small opposite leaves and axillary panicles of fragrant white flowers
[2]henna vt (1919): to dye (as hair) with henna