Dead-Nettle, in botany: A genus of the gymnospermia order, belonging to the didynamia class of plants; and in the natural method ranking under the 42d order, Verticillate. The upper lip of the corolla is entire, arched, the under lip bilobous; the throat with a dent or tooth on each side the margin. There are eight species; of which only two, viz. the album, white archangel or dead-nettle, and the purpureum or red archangel, deserve notice. The first grows frequently under hedges and in waste places; the second is very common in gardens and corn-fields. The flowers of the first, which appear in April and May, have been particularly celebrated in uterine flours and other female weaknesses, and also in disorders of the lungs; but they appear to be of very weak virtue; and they are at present so little used in Britain as to have now no place in our pharmacopoeias. The young leaves of both species are boiled and eaten in some places like greens.