Archil, n. [OF. orchel, orcheil, It. orcella, oricello, or OSp. orchillo. Cf. Orchil.].
A violet dye obtained from several species of lichen (Roccella tinctoria, etc.), which grow on maritime rocks in the Canary and Cape Verd Islands, etc. Tomlinson. [1913 Webster]
The plant from which the dye is obtained. [1913 Webster]