I. ˈhe-nə noun
Etymology: Arabic ḥinnā'
Date: 1600
1. : a reddish-brown dye obtained from leaves of the henna plant and used especially on hair
2. : an Old World tropical shrub or small tree ( Lawsonia inermis ) of the loosestrife family with small opposite leaves and panicles of fragrant usually white flowers
II. transitive verb
Date: 1919
: to dye (as hair) with henna