Archangel \Arch`an"gel\, n. [L. archangelus, Gr. 'archa`ggelos: cf. OF. archangel, F. archange. See Arch-, pref., and Angel.]

1. A chief angel; one high in the celestial hierarchy. --Milton.

2. (Bot.) A term applied to several different species of plants (Angelica archangelica, Lamium album, etc.).

Source: Webster's Revised Unabridged Dictionary (1913)