/kum"free/ , n. , pl. comfreys .
any coarse Eurasian plant belonging to the genus Symphytum, of the borage family, as the widely cultivated S. officinale, having hairy, lance-shaped leaves and drooping clusters of small, white, rose-colored, or purplish flowers.
[ 1275-1325; ME cumfirie, conferye cumfirie, OF confire confervia for L conferva CONFERVA ]